研究者詳細 - 清水　裕彦

Nuclear spin dependence of time reversal invariance violating effects in neutron scattering 査読有り Open Access

Gudkov, V; Shimizu, HM

PHYSICAL REVIEW C 97 巻 ( 6 ) 2018年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review C

The spin structure of parity violating and time reversal invariance violating effects in neutron scattering is discussed. The explicit relations between these effects are presented in terms of functions nuclear spins and neutron partial widths of p-wave resonances.

DOI： 10.1103/PhysRevC.97.065502

First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere Open Access

Abdellaoui G., Abe S., Adams J. H. Jr., Ahriche A., Allard D., Allen L., Alonso G., Anchordoqui L., Anzalone A., Arai Y., Asano K., Attallah R., Attoui H., Ave Pernas M., Bacholle S., Bakiri M., Baragatti P., Barrillon P., Bartocci S., Bayer J., Beldjilali B., Belenguer T., Belkhalfa N., Bellotti R., Belov A., Belov K., Benmessai K., Bertainaek M., Biermann P. L., Biktemerova S., Bisconti F., Blanc N., Blecki J., Blin-Bondil S., Bobik P., Bogomilov M., Bozzo E., Bruno A., Caballero K. S., Cafagna F., Campana D., Capdevielle J-N, Capel F., Caramete A., Caramete L., Carlson P., Caruso R., Casolino M., Cassardo C., Castellina A., Catalano C., Catalano O., Cellino A., Chikawa M., Chiritoi G., Christl M. J., Connaughton V, Conti L., Cordero G., Cotto G., Crawford H. J., Cremonini R., Csorna S., Cummings A., Dagoret-Campagne S., De Donato C., de la Taille C., De Santis C., del Peral L., Di Martino M., Damian A. Diaz, Djemil T., Dutan I, Ebersoldt A., Ebisuzaki T., Engel R., Eser J., Fenuek F., Fernandez-Gonzalez S., Fernandez-Soriano J., Ferrarese S., Flamini M., Fornaro C., Fouka M., Franceschi A., Franchini S., Fuglesang C., Fujii T., Fujimoto J., Fukushima M., Galeotti P., Garcia-Ortega E., Garipov G., Gascon E., Genci J., Giraudo G., Gonzalez Alvarado C., Gorodetzky P., Greg R., Guarino F., Guzman A., Hachisu Y., Haiduc M., Harlov B., Haungs A., Hernandez Carretero J., Hidber Cruz W., Ikeda D., Inoue N., Inoue S., Isgro F., Itow Y., Jammer T., Jeong S., Joven E., Judd E. G., Jung A., Jochum J., Kajino F., Kajino T., Kalli S., Kaneko I, Karadzhov Y., Karczmarczyk J., Katahira K., Kawai K., Kawasaki Y., Kedadra A., Khales H., Khrenov B. A., Kim Jeong-Sook, Kim Soon-Wook, Kleifges M., Klimov P. A., Kolev D., Krantz H., Kreykenbohm I, Kudela K., Kurihara Y., Kusenko A., Kuznetsov E., La Barbera A., Lachaud C., Lahmar H., Lakhdari F., Larson R., Larsson O., Lee J., Licandro J., Lopez Campano L., Maccarone M. C., Mackovjak S., Mahdi M., Maravilla D., Marcelli L., Marcos J. L., Marini A., Marszal W., Martens K., Martin Y., Martinez O., Martucci M., Masciantonio G., Mase K., Mastafa M., Matev R., Matthews J. N., Mebarki N., Medina-Tanco G., Mendoza M. A., Menshikov A., Merino A., Meseguer J., Meyer S. S., Mimouni J., Miyamoto H., Mizumoto Y., Monaco A., Morales de los Rios J. A., Moretto C., Nagataki S., Naitamor S., Napolitano T., Naslund W., Nava R., Neronov A., Nomoto K., Nonaka T., Ogawa T., Ogio S., Ohmori H., Olinto A. V, Orleanski P., Osteria G., Pagliaro A., Painter W., Panasyuk M. I, Panico B., Pasqualino G., Parizot E., Park I. H., Pastircak B., Patzak T., Paul T., Perez-Grande I, Perfetto F., Peter T., Picozza P., Pindado S., Piotrowski L. W., Piraino S., Placidi L., Plebaniak Z., Pliego S., Pollini A., Polonski Z., Popescu E. M., Prat P., Prevot G., Prieto H., Puehlhofer G., Putis M., Rabanal J., Radu A. A., Reyes M., Rezazadeh M., Ricci M., Rodriguez Frias M. D., Rodencal M., Ronga F., Roudil G., Rusinov I, Rybczynski M., Sabau M. D., Saez Cano G., Sagawa H., Sahnoune Z., Saito A., Sakaki N., Salazar H., Sanchez Balanzar J. C., Sanchez J. L., Santangelo A., Sanz-Andres A., Sanz Palomino M., Saprykin O., Sarazin F., Sato M., Schanz T., Schieler H., Scotti V, Selmane S., Semikoz D., Serra M., Sharakin S., Shimizu H. M., Shinozaki K., Shirahama T., Spataro B., Stan I, Sugiyama T., Supanitsky D., Suzuki M., Szabelska B., Szabelski J., Tajima N., Tajima T., Takahashi Y., Takami H., Takeda M., Takizawa Y., Talai M. C., Tenzer C., Thomas S. B., Tibolla O., Tkachev L., Tokuno H., Tomida T., Tone N., Toscano S., Traiche M., Tsenov R., Tsunesada Y., Tsuno K., Tubbs J., Turriziani S., Uchihori Y., Vaduvescu O., Valdes-Galicia J. F., Vallania P., Vankova G., Vigorito C., Villasenor L., Vlcek B., Von Ballmoos P., Vrabel M., Wada S., Watanabe J., Watts J. Jr., Weber M., Weigand Munoz R., Weindl A., Wiencke L., Wille M., Wilms J., Wlodarczyk Z., Yamamoto T., Yang J., Yano H., Yashin I. V, Yonetoku D., Yoshida S., Young R., Zgura I. S., Zotov M. Yu, Marchi A. Zuccaro

JOURNAL OF INSTRUMENTATION 13 巻 2018年5月

Angular distribution of γ rays from neutron-induced compound states of 140La Open Access

Okudaira, T; Takada, S; Hirota, K; Kimura, A; Kitaguchi, M; Koga, J; Nagamoto, K; Nakao, T; Okada, A; Sakai, K; Shimizu, HM; Yamamoto, T; Yoshioka, T

PHYSICAL REVIEW C 97 巻 ( 3 ) 2018年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review C

The angular distribution of individual γ rays, emitted from a neutron-induced compound-nuclear state via radiative capture reaction of La139(n,γ) has been studied as a function of incident neutron energy in the epithermal region by using germanium detectors. An asymmetry ALH was defined as (NL-NH)/(NL+NH), where NL and NH are integrals of low- and high-energy region of a neutron resonance respectively, and we found that ALH has the angular dependence of (Acosθγ+B), where θγ is the emitted angle of γ rays, with A=-0.3881±0.0236 and B=-0.0747±0.0105 in 0.74 eV p-wave resonance. This angular distribution was analyzed within the framework of interference between s- and p-wave amplitudes in the entrance channel to the compound-nuclear state, and it is interpreted as the value of the partial p-wave neutron width corresponding to the total angular momentum of the incident neutron combined with the weak matrix element, in the context of the mechanism of enhanced parity-violating effects. Additionally, we use the result to quantify the possible enhancement of the breaking of time-reversal invariance in the vicinity of the p-wave resonance.

DOI： 10.1103/PhysRevC.97.034622

Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam 査読有り Open Access

Haddock, CC; Oi, N; Hirota, K; Ino, T; Kitaguchi, M; Matsumoto, S; Mishima, K; Shima, T; Shimizu, HM; Snow, WM; Yoshioka, T

PHYSICAL REVIEW D 97 巻 ( 6 ) 2018年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Physical Review D

We describe an experimental search for deviations from the inverse-square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beam line. By measuring the neutron momentum transfer (q) dependence of the differential cross section for xenon and helium and comparing to their well-known analytical forms, we place an upper bound on the strength of a new interaction as a function of interaction length λ which improves upon previous results in the region λ<0.1 nm, and remains competitive in the larger-λ region. A pseudoexperimental simulation is developed for this experiment and its role in the data analysis is described. We conclude with plans for improving sensitivity in the larger-λ region.

DOI： 10.1103/PhysRevD.97.062002

Characterization of germanium detectors for the measurement of the angular distribution of prompt γ-rays at the ANNRI in the MLF of the J-PARC Open Access

Takada, S; Okudaira, T; Goto, F; Hirota, K; Kimura, A; Kitaguchi, M; Koga, J; Nakao, T; Sakai, K; Shimizu, HM; Yamamoto, T; Yoshioka, T

JOURNAL OF INSTRUMENTATION 13 巻 ( 2 ) 2018年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Instrumentation

In this study, the germanium detector assembly, installed at the Accurate Neutron-Nuclear Reaction measurement Instruments (ANNRI) in the Material and Life Science Facility (MLF) operated by the Japan Proton Accelerator Research Complex (J-PARC), has been characterized for extension to the measurement of the angular distribution of individual γ-ray transitions from neutron-induced compound states. We have developed a Monte Carlo simulation code using the GEANT4 toolkit, which can reproduce the pulse-height spectra of γ-rays from radioactive sources and (n,γ) reactions. The simulation is applicable to the measurement of γ-rays in the energy region of 0.5-11.0 MeV.

DOI： 10.1088/1748-0221/13/02/P02018

Angular Distribution of gamma-rays from Neutron-induced Compound States of ¹⁴⁰La 査読有り

T.Okudaira, S.Takada, K.Hirota, A.Kimura, M.Kitaguchi, J.Koga, K.Nagamoto, T.Nakao, A.Okada, K.Sakai, H.M.Shimizu, T.Yamamoto, T.Yoshioka

Physical Review C 頁： 0 2018年

Cosmic ray oriented performance studies for the JEM-EUSO first level trigger Open Access

Abdellaoui, G; Abe, S; Acheli, A; Adams, JH ; Ahmad, S; Ahriche, A; Albert, JN; Allard, D; Alonso, G; Anchordoqui, L; Andreev, V; Anzalone, A; Aouimeur, W; Arai, Y; Arsene, N; Asano, K; Attallah, R; Attoui, H; Pernas, MA; Bacholle, S; Bakiri, M; Baragatti, P; Barrillon, P; Bartocci, S; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, A; Belov, K; Benadda, B; Benmessai, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Bisconti, F; Blanc, N; Blecki, J; Blin-Bondil, S; Bobik, P; Bogomilov, M; Bonamente, M; Boudaoud, R; Bozzo, E; Briggs, MS; Bruno, A; Caballero, KS; Cafagna, F; Campana, D; Capdevielle, JN; Capel, F; Caramete, A; Caramete, L; Carlson, P; Caruso, R; Casolino, M; Cassardo, C; Castellina, A; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Chiritoi, G; Christl, MJ; Connaughton, V; Conti, L; Contino, G; Cordero, G; Cotto, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Di Martino, M; Djemil, T; Djenas, SA; Dulucq, F; Dupieux, M; Dutan, I; Ebersoldt, A; Ebisuzaki, T; Engel, R; Eser, J; Fang, K; Fenu, F; Fernández-González, S; Fernández-Soriano, J; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Forza, R; Fouka, M; Franceschi, A; Franchini, S; Fuglesang, C; Fujimoto, J; Fukushima, M; Galeotti, P; García-Ortega, E; Garipov, G; Gascón, E; Geary, J; Gelmini, G; Genci, J; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guardone, N; Guarino, F; Guehaz, R; Guzmán, A; Hachisu, Y; Haiduc, M; Harlov, B; Haungs, A; Carretero, JH; Hidber, W; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Insolia, A; Isgrò, F; Itow, Y; Jammer, T; Joven, E; Judd, EG; Jung, A; Jochum, J; Kajino, F; Kajino, T; Kalli, S; Kaneko, I; Kang, D; Kanouni, F; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Kedadra, A; Khales, H; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lahmar, H; Lakhdari, F; Larsson, O; Lee, J; Licandro, J; Lim, H; Campano, LL; Maccarone, MC; Mackovjak, S; Mahdi, M; Manfrin, M; Maravilla, D; Marcelli, L; Marcos, JL; Marini, A; Martens, K; Martín, Y; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Matthews, JN; Mebarki, N; Medina-Tanco, G; Mehrad, L; Mendoza, MA; Merino, A; Mernik, T; Meseguer, J; Messaoud, S; Micu, O; Mignone, M; Mimouni, J; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Ríos, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nadji, B; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleanski, P; Osteria, G; Painter, W; Panasyuk, MI; Panico, B; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Pérez-Grande, I; Perfetto, F; Peter, T; Picozza, P; Pierog, T; Pindado, S; Piotrowski, LW; Piraino, S; Placidi, L; Plebaniak, Z; Pliego, S; Pollini, A; Popescu, EM; Prat, P; Prévôt, G; Prieto, H; Putis, M; Rabanal, J; Radu, AA; Rahmani, M; Reardon, P; Reyes, M; Rezazadeh, M; Ricci, M; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Sahnoune, Z; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sanchez, JC; Sánchez, JL; Santangelo, A; Crúz, LS; Sanz-Andrés, A; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; Sledd, J; Slominska, K; Sobey, A; Stan, I; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tahi, H; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Talai, MC; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Traïche, M; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdés-Galicia, JF; Vallania, P; Vankova, G; Vigorito, C; Villaseñor, L; Vlcek, B; von Ballmoos, P; Vrabel, M; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Muñoz, RW; Weindl, A; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, S; Young, R; Zgura, IS; Zotov, MY; Marchi, AZ

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 866 巻頁： 150 - 163 2017年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment

JEM-EUSO is a space mission designed to investigate Ultra-High Energy Cosmic Rays and Neutrinos (E>5⋅1019eV) from the International Space Station (ISS). Looking down from above its wide angle telescope is able to observe their air showers and collect such data from a very wide area. Highly specific trigger algorithms are needed to drastically reduce the data load in the presence of both atmospheric and human activity related background light, yet retain the rare cosmic ray events recorded in the telescope. We report the performance in offline testing of the first level trigger algorithm on data from JEM-EUSO prototypes and laboratory measurements observing different light sources: data taken during a high altitude balloon flight over Canada, laser pulses observed from the ground traversing the real atmosphere, and model landscapes reproducing realistic aspect ratios and light conditions as would be seen from the ISS itself. The first level trigger logic successfully kept the trigger rate within the permissible bounds when challenged with artificially produced as well as naturally encountered night sky background fluctuations and while retaining events with general air-shower characteristics.

DOI： 10.1016/j.nima.2017.05.043

Meteor studies in the framework of the JEM-EUSO program Open Access

Abdellaoui, G; Abe, S; Acheli, A; Adams, JHJH; Ahmad, S; Ahriche, A; Albert, JN; Allard, D; Alonso, G; Anchordoqui, L; Andreev, V; Anzalone, A; Aouimeure, W; Arai, Y; Arsene, N; Asano, K; Attallah, R; Attoui, H; Pemas, MA; Bacholle, S; Bakiri, M; Baragatti, P; Barrillon, P; Bartocci, S; Batsch, T; Bayer, J; Bechini, R; Belenguer, T; Bellotti, R; Belov, A; Belov, K; Benadda, B; Benmessai, K; Berlind, AA; Bertaina, M; Biermann, PL; Biktemerova, S; Bisconti, F; Blanc, N; Blecki, J; Blin-Bondil, S; Bobik, P; Bogomilov, M; Bonamente, M; Boudaoud, R; Bozzo, E; Briggs, MS; Bruno, A; Caballero, KS; Cafagna, F; Campana, D; Capdevielle, JN; Capel, F; Caramete, A; Caramete, L; Carlson, P; Caruso, R; Casolino, M; Cassardo, C; Castellina, A; Castellini, G; Catalano, C; Catalano, O; Cellino, A; Chikawa, M; Chiritoi, G; Christl, MJ; Connaughton, V; Conti, L; Cordero, G; Crawford, HJ; Cremonini, R; Csorna, S; Dagoret-Campagne, S; De Donato, C; de la Taille, C; De Santis, C; del Peral, L; Di Martino, M; Djemil, T; Djenas, SA; Dulucq, F; Dupieux, M; Dutan, I; Ebersoldt, A; Ebisuzaki, T; Engel, R; Eser, J; Fang, K; Fenu, F; Fernandez-Gonzalez, S; Fernandez-Soriano, J; Ferrarese, S; Finco, D; Flamini, M; Fornaro, C; Fouka, M; Franceschi, A; Franchini, S; Fuglesang, C; Fujimoto, J; Fukushima, M; Galeotti, P; García-Ortega, E; Garipov, G; Gascón, E; Geary, J; Gelmini, G; Genci, J; Giraudo, G; Gonchar, M; Alvarado, CG; Gorodetzky, P; Guarino, F; Guehaz, R; Guzmán, A; Hachisu, Y; Haiduc, M; Harlov, B; Haungs, A; Carretero, JH; Hidber, W; Higashide, K; Ikeda, D; Ikeda, H; Inoue, N; Inoue, S; Isgrò, F; Itow, Y; Jammer, T; Joven, E; Judd, EG; Jung, A; Jochum, J; Kajino, F; Kajino, T; Kalli, S; Kaneko, I; Kang, D; Kanouni, F; Karadzhov, Y; Karczmarczyk, J; Karus, M; Katahira, K; Kawai, K; Kawasaki, Y; Kedadra, A; Khales, H; Khrenov, BA; Kim, JS; Kim, SW; Kim, SW; Kleifges, M; Klimov, PA; Kolev, D; Kreykenbohm, I; Kudela, K; Kurihara, Y; Kusenko, A; Kuznetsov, E; Lacombe, M; Lachaud, C; Lahmar, H; Lakhdari, F; Larsson, O; Lee, J; Licandro, J; Lim, H; Campano, LL; Maccarone, MC; Mackovjak, S; Mandi, M; Maravilla, D; Marcelli, L; Marcos, JL; Marini, A; Martens, K; Martín, Y; Martinez, O; Masciantonio, G; Mase, K; Matev, R; Matthews, JN; Mebarki, N; Medina-Tanco, G; Mehrad, L; Mendoza, MA; Merino, A; Memik, T; Meseguer, J; Messaoud, S; Micu, O; Mimouni, J; Miyamoto, H; Miyazaki, Y; Mizumoto, Y; Modestino, G; Monaco, A; Monnier-Ragaigne, D; de los Rios, JAM; Moretto, C; Morozenko, VS; Mot, B; Murakami, T; Nadji, B; Nagano, M; Nagata, M; Nagataki, S; Nakamura, T; Napolitano, T; Nardellis, A; Naumov, D; Nava, R; Neronov, A; Nomoto, K; Nonaka, T; Ogawa, T; Ogio, S; Ohmori, H; Olinto, AV; Orleariski, P; Osteria, G; Painter, W; Panasyuk, MI; Panico, B; Parizot, E; Park, IH; Park, HW; Pastircak, B; Patzak, T; Paul, T; Pennypacker, C; Perdichizzi, M; Perez-Grande, I; Perfetto, F; Peter, T; Picozza, P; Pierog, T; Pindado, S; Piotrowski, LW; Pirainou, S; Placidis, L; Plebaniak, Z; Pliego, S; Pollini, A; Popescu, EM; Prat, P; Prévôt, G; Prieto, H; Putis, M; Rabanal, J; Radu, AA; Rahmani, M; Reardon, P; Reyes, M; Rezazadeh, M; Ricci, M; Frías, MDR; Ronga, F; Roth, M; Rothkaehl, H; Roudil, G; Rusinov, I; Rybczynski, M; Sabau, MD; Cano, GS; Sagawa, H; Sahnoune, Z; Saito, A; Sakaki, N; Sakata, M; Salazar, H; Sanchez, JC; Sanchez, JL; Santangelo, A; Crúz, LS; Sanz-Andrés, A; Palomino, MS; Saprykin, O; Sarazin, F; Sato, H; Sato, M; Schanz, T; Schieler, H; Scotti, V; Segreto, A; Selmane, S; Semikoz, D; Serra, M; Sharakin, S; Shibata, T; Shimizu, HM; Shinozaki, K; Shirahama, T; Siemieniec-Ozieblo, G; Sledd, J; Slomiriska, K; Sobey, A; Stan, I; Sugiyama, T; Supanitsky, D; Suzuki, M; Szabelska, B; Szabelski, J; Tahi, H; Tajima, F; Tajima, N; Tajima, T; Takahashi, Y; Takami, H; Takeda, M; Takizawa, Y; Talai, MC; Tenzer, C; Tibolla, O; Tkachev, L; Tokuno, H; Tomida, T; Tone, N; Toscano, S; Traïche, M; Tsenov, R; Tsunesada, Y; Tsuno, K; Tymieniecka, T; Uchihori, Y; Unger, M; Vaduvescu, O; Valdes-Galicia, JF; Vallania, P; Vankova, G; Vigorito, C; Villaseñor, L; Vicek, B; von Ballmoos, P; Vrabel, M; Wada, S; Watanabe, J; Watanabe, S; Watts, J ; Weber, M; Muñoz, RW; Weindl, A; Weiler, TJ; Wibig, T; Wiencke, L; Wille, M; Wilms, J; Wlodarczyk, Z; Yamamoto, T; Yamamoto, Y; Yang, J; Yano, H; Yashin, IV; Yonetoku, D; Yoshida, S; Young, R; Zgura, IS; Zotov, MY; Marchi, AZ

PLANETARY AND SPACE SCIENCE 143 巻頁： 245 - 255 2017年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Planetary and Space Science

We summarize the state of the art of a program of UV observations from space of meteor phenomena, a secondary objective of the JEM-EUSO international collaboration. Our preliminary analysis indicates that JEM-EUSO, taking advantage of its large FOV and good sensitivity, should be able to detect meteors down to absolute magnitude close to 7. This means that JEM-EUSO should be able to record a statistically significant flux of meteors, including both sporadic ones, and events produced by different meteor streams. Being unaffected by adverse weather conditions, JEM-EUSO can also be a very important facility for the detection of bright meteors and fireballs, as these events can be detected even in conditions of very high sky background. In the case of bright events, moreover, exhibiting some persistence of the meteor train, preliminary simulations show that it should be possible to exploit the motion of the ISS itself and derive at least a rough 3D reconstruction of the meteor trajectory. Moreover, the observing strategy developed to detect meteors may also be applied to the detection of nuclearites, exotic particles whose existence has been suggested by some theoretical investigations. Nuclearites are expected to move at higher velocities than meteoroids, and to exhibit a wider range of possible trajectories, including particles moving upward after crossing the Earth. Some pilot studies, including the approved Mini-EUSO mission, a precursor of JEM-EUSO, are currently operational or in preparation. We are doing simulations to assess the performance of Mini-EUSO for meteor studies, while a few meteor events have been already detected using the ground-based facility EUSO-TA.

DOI： 10.1016/j.pss.2016.12.001

Pseudomagnetic effects for resonance neutrons 査読有り Open Access

Vladimir Gudkov, Hirohiko M. Shimizu

Physical Review C 95 巻頁： 045501 2017年4月

A neutron detector with submicron spatial resolution using fine-grained nuclear emulsion Open Access

Naganawa N., Awano S., Hino M., Hirose M., Hirota K., Kawahara H., Kitaguchi M., Mishima K., Nagae T., Shimizu H. M., Tasaki S., Umemoto A.

NEUTRON IMAGING FOR APPLICATIONS IN INDUSTRY AND SCIENCE 88 巻頁： 224 - 230 2017年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physics Procedia

We developed a neutron detector with submicron spatial resolution by incorporating 6Li into a fine-grained nuclear emulsion. Upon exposure to thermal neutrons, tracks from neutron capture events were observed. The detector spatial resolution was estimated from their grain density. Detection efficiency was measured using the detector response to cold neutrons.

DOI： 10.1016/j.phpro.2017.06.031

Erythrokeratoderma Variabilis Caused by p.Gly45Glu in Connexin 31: Importance of the First Extracellular Loop Glycine Residue for Gap Junction Function Open Access

Takeichi Takuya, Sugiura Kazumitsu, Hsu Chao-Kai, Nomura Toshifumi, Takama Hiroyuki, Simpson Michael A., Shimizu Hiroshi, McGrath John A., Akiyama Masashi

ACTA DERMATO-VENEREOLOGICA 96 巻 ( 4 ) 頁： 557 - 559 2016年

Pulsed neutron-beam focusing by modulating a permanent-magnet sextupole lens 査読有り Open Access

Yamada, M; Iwashita, Y; Ichikawa, M; Fuwa, Y; Tongu, H; Shimizu, HM; Mishima, K; Yamada, NL; Hirota, K; Otake, Y; Seki, Y; Yamagata, Y; Hino, M; Kitaguchi, M; Garbe, U; Kennedy, SJ; Lee, WT; Andersen, KH; Guerard, B; Manzin, G; Geltenbort, P

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS 2015 巻 ( 4 ) 2015年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Progress of Theoretical and Experimental Physics

We have developed a compact permanent-magnet sextupole lens for neutrons that can focus a pulsed beam with a wide wavelength range-the maximum wavelength being more than double the minimum-while sufficiently suppressing the effect of chromatic aberration. The bore diameter is ø15 mm. Three units of a double-ring sextupole with a length of 66mm are cascaded, resulting in a total length of 198 mm. The dynamic modulation range of the unit-averaged field gradient is 1.06 × 104-5.86 × 104 Tm-2. Permanent magnets and newly developed torquecanceling elements make the device compact, its production costs low, and its operation simpler than that of other magnetic lenses. The efficacy of this lens was verified using very cold neutrons. The diameter of the focused beam spots over the wavelength range of 27-55 Å was the same as that of the source aperture (2mm diameter) when the magnification of the optical arrangement was unity. The total beam flux over this wavelength range was enhanced by a factor of 43. The focusing distance from the source to the detector was 1.84m. In addition, in a demonstration of neutron image magnification, the image of a sample mask magnified by a factor of 4.1 was observed when the magnification of the optical arrangement was 5.0.

DOI： 10.1093/ptep/ptv015