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Yomogida, Takumi; Hashimoto, Tadashi; Okumura, Takuma*; Yamada, Shinya*; Tatsuno, Hideyuki*; Noda, Hirofumi*; Hayakawa, Ryota*; Okada, Shinji*; Takatori, Sayuri*; Isobe, Tadaaki*; et al.
Analyst, 149(10), p.2932 - 2941, 2024/03
In this study, we successfully applied a transition-edge sensor (TES) spectrometer as a detector for microbeam X-ray measurements from a synchrotron X-ray light source to determine uranium (U) distribution at the micro-scale and its chemical species in biotite obtained from the U mine. It is difficult to separate the fluorescent X-ray of the U L line at 13.615 keV from that of the Rb K line at 13.395 keV in the X-ray fluorescence spectrum with an energy resolution of approximately 220 eV of the conventional silicon drift detector (SDD). Meanwhile, the fluorescent X-rays of U L and Rb K were fully separated by TES with 50 eV energy resolution at the energy of around 13 keV. The successful peak separation by TES led to an accurate mapping analysis of trace U in micro-X-ray fluorescence measurements and a decrease in the signal-to-background ratio in micro-X-ray absorption near edge structure spectroscopy.
Akaishi, Takaya; Hashimoto, Tadashi; Tanida, Kiyoshi; 35 of others*
Physics Letters B, 845, p.138128_1 - 138128_4, 2023/10
Times Cited Count:1 Percentile:59.27(Astronomy & Astrophysics)Nishi, Takahiro*; Hashimoto, Tadashi; 46 of others*
Nature Physics, 19(6), p.788 - 793, 2023/06
Times Cited Count:4 Percentile:88.07(Physics, Multidisciplinary)Okumura, Takuma*; Hashimoto, Tadashi; 40 of others*
Physical Review Letters, 130(17), p.173001_1 - 173001_7, 2023/04
Times Cited Count:1 Percentile:83.24(Physics, Multidisciplinary)Li, W.*; Yamada, Shinya*; Hashimoto, Tadashi; Okumura, Takuma*; Hayakawa, Ryota*; Nitta, Kiyofumi*; Sekizawa, Oki*; Suga, Hiroki*; Uruga, Tomoya*; Ichinohe, Yuto*; et al.
Analytica Chimica Acta, 1240, p.340755_1 - 340755_9, 2023/02
Times Cited Count:4 Percentile:52.44(Chemistry, Analytical)no abstracts in English
Aikawa, Shu*; Hashimoto, Tadashi; Tanida, Kiyoshi; 73 of others*
Physics Letters B, 837, p.137637_1 - 137637_8, 2023/02
Times Cited Count:2 Percentile:47.44(Astronomy & Astrophysics)Hashimoto, Tadashi; Tanida, Kiyoshi; 68 of others*
Physical Review Letters, 128(11), p.112503_1 - 112503_6, 2022/03
Times Cited Count:8 Percentile:81.55(Physics, Multidisciplinary)Okumura, Takuma*; Azuma, Toshiyuki*; Bennet, D. A.*; Caradonna, P.*; Chiu, I.-H.*; Doriese, W. B.*; Durkin, M. S.*; Fowler, J. W.*; Gard, J. D.*; Hashimoto, Tadashi; et al.
IEEE Transactions on Applied Superconductivity, 31(5), p.2101704_1 - 2101704_4, 2021/08
Times Cited Count:1 Percentile:10.16(Engineering, Electrical & Electronic)A superconducting transition-edge sensor (TES) microcalorimeter is an ideal X-ray detector for experiments at accelerator facilities because of good energy resolution and high efficiency. To study the performance of the TES detector with a high-intensity pulsed charged-particle beam, we measured X-ray spectra with a pulsed muon beam at the Japan Proton Accelerator Research Complex (J-PARC) in Japan. We found substantial temporal shifts of the X-ray energy correlated with the arrival time of the pulsed muon beam, which was reasonably explained by pulse pileup due to the incidence of energetic particles from the initial pulsed beam.
Okumura, Takuma*; Azuma, Toshiyuki*; Bennet, D. A.*; Caradonna, P.*; Chiu, I. H.*; Doriese, W. B.*; Durkin, M. S.*; Fowler, J. W.*; Gard, J. D.*; Hashimoto, Tadashi; et al.
Physical Review Letters, 127(5), p.053001_1 - 053001_7, 2021/07
Times Cited Count:15 Percentile:82.53(Physics, Multidisciplinary)We observed electronic X rays emitted from muonic iron atoms using a superconducting transition-edge-type sensor microcalorimeter. The energy resolution of 5.2 eV in FWHM allowed us to observe the asymmetric broad profile of the electronic characteristic and X rays together with the hypersatellite X rays around 6 keV. This signature reflects the time-dependent screening of the nuclear charge by the negative muon and the -shell electrons, accompanied by electron side-feeding. Assisted by a simulation, this data clearly reveals the electronic - and -shell hole production and their temporal evolution during the muon cascade process.
Yoshimoto, Masahiro*; Fujita, Manami; Hashimoto, Tadashi; Hayakawa, Shuhei; Ichikawa, Yudai; Ichikawa, Masaya; Imai, Kenichi*; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; et al.
Progress of Theoretical and Experimental Physics (Internet), 2021(7), p.073D02_1 - 073D02_19, 2021/07
Times Cited Count:13 Percentile:79.65(Physics, Multidisciplinary)Yoshida, Junya; Akaishi, Takaya; Fujita, Manami; Hasegawa, Shoichi; Hashimoto, Tadashi; Hosomi, Kenji; Ichikawa, Masaya; Ichikawa, Yudai; Imai, Kenichi*; Kim, S.; et al.
JPS Conference Proceedings (Internet), 33, p.011112_1 - 011112_8, 2021/03
Hayakawa, Shuhei; Fujita, Manami; Hasegawa, Shoichi; Hashimoto, Tadashi; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi*; Nanamura, Takuya; Naruki, Megumi; Sako, Hiroyuki; et al.
Physical Review Letters, 126(6), p.062501_1 - 062501_6, 2021/02
Times Cited Count:34 Percentile:94.71(Physics, Multidisciplinary)Yamaga, Takumi*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*
Physical Review C, 102(4), p.044002_1 - 044002_14, 2020/10
Times Cited Count:17 Percentile:88.54(Physics, Nuclear)Sakuma, Fuminori*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*
AIP Conference Proceedings 2249, p.020005_1 - 020005_10, 2020/07
Times Cited Count:1 Percentile:68.25(Physics, Applied)Sakuma, Fuminori*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*
JPS Conference Proceedings (Internet), 32, p.010088_1 - 010088_8, 2020/07
Yamaga, Takumi*; Hashimoto, Tadashi; Tanida, Kiyoshi; 66 of others*
JPS Conference Proceedings (Internet), 26, p.023008_1 - 023008_6, 2019/11
Kawasaki, Shingo*; Hashimoto, Tadashi; Tanida, Kiyoshi; 72 of others*
JPS Conference Proceedings (Internet), 26, p.022009_1 - 022009_5, 2019/11
Asano, Hidemitsu*; Hashimoto, Tadashi; Tanida, Kiyoshi; 72 of others*
AIP Conference Proceedings 2130, p.040018_1 - 040018_6, 2019/07
Times Cited Count:3 Percentile:81.79(Physics, Nuclear)Hashimoto, Tadashi; Tanida, Kiyoshi; 67 of others*
Physics Letters B, 789, p.620 - 625, 2019/02
Times Cited Count:33 Percentile:94.77(Astronomy & Astrophysics)We observed a distinct peak in the invariant mass spectrum of , well below , , the mass threshold of the to be bound to two protons. By selecting a relatively large momentum-transfer region MeV/, one can clearly separate the peak from the quasi-free process, followed by the non-resonant absorption by the non-resonant absorption by the two spectator-nucleons . We found that the simplest fit to the observed peak gives us a Breit-Wignerpole position at MeV having a width MeV, and the -wave Gaussian reaction form-factor parameter MeV/, as a new form of the nuclear bound system with strangeness -"".
Ekawa, Hiroyuki; Ashikaga, Sakiko; Hasegawa, Shoichi; Hashimoto, Tadashi; Hayakawa, Shuhei; Hosomi, Kenji; Ichikawa, Yudai; Imai, Kenichi; Kimbara, Shinji*; Nanamura, Takuya; et al.
Progress of Theoretical and Experimental Physics (Internet), 2019(2), p.021D02_1 - 021D02_11, 2019/02
Times Cited Count:25 Percentile:83.09(Physics, Multidisciplinary)