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Journal Articles

Experimental study of the $$Gamma_{p1}/Gamma_{p0}$$ ratios of resonance states in $$^{8}$$Be for deducing the $$^{7}$$Be($$n$$,$$p_{1}$$)$$^{7}$$Li$$^{*}$$ reaction rate relevant to the cosmological lithium problem

Iwasa, Naohito*; Ishikawa, Shunki*; Kubono, Shigeru*; Sakakibara, T.*; Kominato, Kazuya*; Nishio, Katsuhisa; Matsuda, Makoto; Hirose, Kentaro; Makii, Hiroyuki; Orlandi, R.; et al.

Physical Review C, 103(1), p.015801_1 - 015801_5, 2021/01

https://doi.org/10.1103/PhysRevC.103.015801
 Times Cited Count：2 Percentile：22.16(Physics, Nuclear)

Journal Articles

Electron-tracking Compton camera imaging of technetium-95m

Hatsukawa, Yuichi*; Hayakawa, Takehito*; Tsukada, Kazuaki; Hashimoto, Kazuyuki*; Sato, Tetsuya; Asai, Masato; Toyoshima, Atsushi; Tanimori, Toru*; Sonoda, Shinya*; Kabuki, Shigeto*; et al.

PLOS ONE (Internet), 13(12), p.e0208909_1 - e0208909_12, 2018/12

AA2018-0639.pdf:2.39MB

https://doi.org/10.1371/journal.pone.0208909
 Times Cited Count：5 Percentile：37.19(Multidisciplinary Sciences)

Imaging of $$^{95m}$$Tc radioisotope was conducted using an electron tracking-Compton camera (ETCC). $$^{95m}$$Tc emits 204, 582, and 835 keV $$gamma$$ rays, and was produced in the $$^{95}$$Mo(p,n)$$^{95m}$$Tc reaction with a $$^{95}$$Mo-enriched target. The recycling of the $$^{95}$$Mo-enriched molybdenum trioxide was investigated, and the recycled yield of $$^{95}$$Mo was achieved to be 70% - 90%. The images were obtained with each of the three $$gamma$$ rays. Results showed that the spatial resolution increases with increasing $$gamma$$-ray energy, and suggested that the ETCC with high-energy $$gamma$$-ray emitters such as $$^{95m}$$Tc is useful for the medical imaging of deep tissue and organs in the human body.

Journal Articles

Excited states above the proton threshold in $$^{26}$$Si

Komatsubara, Tetsuro*; Kubono, Shigeru*; Hayakawa, Takehito; Shizuma, Toshiyuki; Osawa, Akira*; Ito, Yuta*; Ishibashi, Yoko*; Moriguchi, Tetsuro*; Yamaguchi, Hidetoshi*; Kahl, D.*; et al.

European Physical Journal A, 50, p.136_1 - 136_9, 2014/09

https://doi.org/10.1140/epja/i2014-14136-4
 Times Cited Count：15 Percentile：66.48(Physics, Nuclear)

The level scheme above the proton threshold in $$^{26}$$Si is crucial for evaluating the $$^{25}$$Al(p,$$gamma$$)$$^{26}$$Si stellar reaction, which is important for understanding the astrophysical origin of the long-lived cosmic radioactivity $$^{26}$$Al(T$$_{1/2}$$=7.17$$times$$10$$^{5}$$ y) in the Galaxy. The excited states in $$^{26}$$Si have been studied using an in-beam $$gamma$$-ray spectroscopy technique with the $$^{24}$$Mg($$^{3}$$He,n$$gamma$$)$$^{26}$$Si reaction. The spin-parity of one of the most important states reported recently at 5890.0 keV has been assigned as 0$$^{+}$$ by $$gamma$$-$$gamma$$ angular correlation measurements.

Oral presentation

Beta-decay measurement of $$^{46}$$Cr

Wakabayashi, Yasuo; Yamaguchi, Hidetoshi*; Hashimoto, Takashi*; Hayakawa, Seiya*; Kurihara, Yuzo*; Binh, D.*; Kahl, D.*; Kubono, Shigeru*; Nishimura, Shunji*; Gono, Yasuyuki*; et al.

no journal, , 

Oral presentation

Late Holocene environmental changes in west Mongolia revealed by the lacustrine sediment analyses

Hayakawa, Tsubasa*; Katsuta, Nagayoshi*; Kokubu, Yoko; Hasebe, Noriko*; Murakami, Takuma; Miyata, Yoshiki*; Hasegawa, Hitoshi*; Nagao, Seiya*; Kawakami, Shinichi*

no journal, , 

no abstracts in English

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