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3. Response of germanium detectors for high-energy $\gamma$-rays by $^{27}$Al(p, $\gamma$)$^{28}$Si at Ep=992 keV

Author

Mizuno, Rurie, Niikura, Megumi, Ikeda, Tokihiro, Matsuzaki, Teiichiro, Go, Shintaro, Saito, Takeshi Y., Michimasa, Shin'ichiro, and Sakurai, Hiroyoshi

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The performance of germanium detectors for high-energy $\gamma$-rays was evaluated using a 992-keV resonance in the $^{27}$Al(p, $\gamma$)$^{27}$Si reaction. The measurement was conducted at the RIKEN tandem accelerator. The energy of the excited state from the resonance was evaluated as 12540.7(2) keV. Using newly evaluated excitation energy, an energy calibration function and the photo-peak efficiency of Ge detectors up to 10.8-MeV photon were deduced. The energy accuracy is achieved at 0.3 keV for the overall energy region. This reaction provides reliable energy and efficiency standards for high-energy $\gamma$ rays.

Published
2023

5. Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a 238U Beam at 345 MeV/nucleon

Author

Ohnishi, Tetsuya, Kubo*, Toshiyuki, Kusaka, Kensuke, Yoshida, Atsushi, Yoshida, Koichi, Ohtake, Masao, Fukuda, Naoki, Takeda, Hiroyuki, Kameda, Daisuke, Tanaka, Kanenobu, Inabe, Naohito, Yanagisawa, Yoshiyuki, Gono, Yasuyuki, Watanabe, Hiroshi, Otsu, Hideaki, Baba, Hidetada, Ichihara, Takashi, Yamaguchi, Yoshitaka, Takechi, Maya, Nishimura, Shunji, Ueno, Hideki, Yoshimi, Akihiro, Sakurai, Hiroyoshi, Motobayashi, Tohru, Nakao, Taro, Mizoi, Yutaka, Matsushita, Masafumi, Ieki, Kazuo, Kobayashi, Nobuyuki, Tanaka, Kana, Kawada, Yosuke, Tanaka, Naoki, Deguchi, Shigeki, Satou, Yoshiteru, Kondo, Yosuke, Nakamura, Takashi, Yoshinaga, Kenta, Ishii, Chihiro, Yoshii, Hideakira, Miyashita, Yuki, Uematsu, Nobuya, Shiraki, Yasutsugu, Sumikama, Toshiyuki, Chiba, Junsei, Ideguchi, Eiji, Saito, Akito, Yamaguchi, Takayuki, Hachiuma, Isao, Suzuki, Takeshi, Moriguchi, Tetsuaki, Ozawa, Akira, Ohtsubo, Takashi, Famiano, Michael A., Geissel, Hans, Nettleton, Anthony S., Tarasov, Oleg B., Bazin, Daniel P., Sherrill, Bradley M., Manikonda, Shashikant L., and Nolen, Jerry A.

Subjects
Nuclear Experiment
Abstract

A search for new isotopes using in-flight fission of a 345 MeV/nucleon 238U beam has been carried out at the RI Beam Factory at the RIKEN Nishina Center. Fission fragments were analyzed and identified by using the superconducting in-flight separator BigRIPS. We observed 45 new neutron-rich isotopes: 71Mn, 73,74Fe, 76Co, 79Ni, 81,82Cu, 84,85Zn, 87Ga, 90Ge, 95Se, 98Br, 101Kr, 103Rb, 106,107Sr, 108,109Y, 111,112Zr, 114,115Nb, 115,116,117Mo, 119,120Tc, 121,122,123,124Ru, 123,124,125,126Rh, 127,128Pd, 133Cd, 138Sn, 140Sb, 143Te, 145I, 148Xe, and 152Ba.

Published
2010
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6. Spallation reaction study for the long-lived fission products in nuclear waste: Cross section measurements for 137Cs, 90Sr and 107Pd using inverse kinematics method

Author

Wang, He, Otsu, Hideaki, Sakurai, Hiroyoshi, Ahn, DeukSoon, Chiga, Nobuyuki, Doornenbal, Pieter, Fukuda, Naoki, Isobe, Tadaaki, Kubo, Toshiyuki, Kubono, Shigeru, Lorusso, Giusseppe, Söderström, Pär-Anders, Suzuki, Hiroshi, Takeda, Hiroyuki, Watanabe, Yasushi, Yoshida, Koichi, Matsuzaki, Teiichiro, Shimizu, Yohei, Sumikama, Toshiyuki, Uesaka, Meiko, Kawase, Shoichiro, Nakano, Keita, Watanabe, Yukinobu, Araki, Shouhei, Kin, Tadahiro, Takeuchi, Satoshi, Togano, Yasuhiro, Nakamura, Takashi, Kondo, Yosuke, Ozaki, Tomoyuki, Saito, Atsumi, Tsubota, Junichi, Aikawa, Masayuki, Makinaga, Ayano, Ando, Takashi, Koyama, Shunpei, Momiyama, Satoru, Nagamine, Shunsuke, Niikura, Megumi, Saito, Takeshi, Taniuchi, Ryo, Wimmer, Kathrin, Kawakami, Shunsuke, Maeda, Yukie, Yamamoto, Tatsuya, Shiga, Yoshiaki, Matsushita, Masafumi, Michimasa, Shin’ichiro, and Shimoura, Susumu

Published
2017
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8. Isotope-production cross sections of residual nuclei in proton- and deuteron-induced reactions on 93Zr at 50 MeV/u

Author

Nakano Keita, Watanabe Yukinobu, Kawase Shoichiro, Wang He, Otsu Hideaki, Sakurai Hiroyoshi, Chiga Nobuyuki, Suwa Junki, Sumikama Toshiyuki, Takeuchi Satoshi, Nakamura Takashi, Chikaato Kazuya, Takechi Maya, Koyama Shunpei, Soon Ahn Deuk, Baba Hidetada, Chen Sidong, Cortes Martha Liliana, Doornenbal Pieter, Fukuda Naoki, Hirayama Akihiro, Hosoda Ryohei, Isobe Tadaaki, Kawakami Shunsuke, Kondo Yosuke, Kubono Shigeru, Maeda Yukie, Masuoka Shoichiro, Michimasa Shin’ichiro, Murray Ian, Nakajima Ryo, Niikura Megumi, Ozaki Tomoyuki, Saito Atsumi, Saito Takeshi, Sato Hiromi, Shimizu Yohei, Shimoura Susumu, Soudo Yoshiki, Söderström Pär-Anders, Sun Xiaohui, Suzuki Daisuke, Suzuki Hiroshi, Takeda Hiroyuki, Togano Yasuhiro, Tomai Takato, Yamada Hiroki, Yasuda Masahiro, and Yoshida Koichi

Subjects
Physics, QC1-999
Abstract

The isotope-production cross sections in p- and d-induced reactions on 93Zr at approximately 50 MeV/nucleon were measured by using the inverse-kinematics method at RIKEN RI Beam Factory. The measured data were compared with the previous experimental 93Zr + p, d at 105 and 209 MeV/nucleon data. This comparison represents that the isotopic distribution of production cross sections at 51 MeV p-induced reaction is appreciably different from those at 105 and 209 MeV. On the other hand, these three data sets show that the shape of isotopic distribution is similar in the case of the d-induced reaction. Also, the measured production cross sections were compared with the theoretical model calculations with Particle and Heavy Ion Transport code System (PHITS) version 3.10 in order to investigate the reproducibility of the models implemented in PHITS. The calculations well reproduced the experimental data even in such low incident energy, while several discrepancies were still seen as in the p- and d-induced reactions at 105 and 209 MeV/nucleon.

Published
2020
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9. Spallation reaction study for long-lived fission products in nuclear waste

Author

Wang He, Otsu Hideaki, Sakurai Hiroyoshi, Ahn DeukSoon, Aikawa Masayuki, Ando Takashi, Araki Shouhei, Chen Sidong, Chiga Nobuyuki, Doornenbal Pieter, Fukuda Naoki, Isobe Tadaaki, Kawakami Shunsuke, Kawase Shoichiro, Kin Tadahiro, Kondo Yosuke, Koyama Shunpei, Kubono Shigeru, Maeda Yukie, Makinaga Ayano, Matsushita Masafumi, Matsuzaki Teiichiro, Michimasa Shin ichiro, Momiyama Satoru, Nagamine Shunsuke, Nakamura Takashi, Nakano Keita, Niikura Megumi, Ozaki Tomoyuki, Saito Atsumi, Saito Takeshi, Shiga Yoshiaki, Shikata Mizuki, Shimizu Yohei, Shimoura Susumu, Sumikama Toshiyuki, Söderstrom Pär-Anders, Suzuki Hiroshi, Takeda Hiroyuki, Takeuchi Satoshi, Taniuchi Ryo, Togano Yasuhiro, Tsubota Junichi, Uesaka Meiko, Watanabe Yasushi, Watanabe Yukinobu, Wimmer Kathrin, Yamamoto Tatsuya, and Yoshida Koichi

Subjects
Physics, QC1-999
Abstract

Spallation reaction for the long-lived fission product 107Pd has been studied for the purpose of nuclear waste transmutation. The isotopic-distribution cross sections on both proton and deuteron were obtained at 118 MeV/nucleon in inverse kinematics at the RIKEN Radioactive Isotope Beam Factory. A large cross-section difference was found between the proton and deuteron results for the light-mass products. The data were compared with the SPACS semi-empirical parameterization and the PHITS calculations including both the intranuclear cascade and evaporation processes. In addition, the potential of spallation reaction for transmutation of 107Pd is discussed.

Published
2020
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10. ImPACT under RIKEN Nishina Center

Author

Sakurai Hiroyoshi

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Physics::Accelerator Physics, Factory (object-oriented programming), Center (algebra and category theory), Nuclear Experiment, Beam (structure)
Abstract

Since 2007, the Radioactive Isotope Beam Factory (RIBF) [1] has been one of the world-leading heavy-ion accelerator facilities for low-energy nuclear physics. RIBF has contributed to the expansion ...

Published
2021

12. Beam commissioning of the SπRIT time projection chamber

Author

Jhang, Genie, Barney, Jon, Estee, Justin, Isobe, Tadaaki, Kaneko, Masanori, Kurata-Nishimura, Mizuki, Cerizza, Giordano, Santamaria, Clementine, Lee, Jung Woo, Lasko, Paweł, Łukasik, Jerzy, Lynch, William G., McIntosh, Alan B., Murakami, Tetsuya, Pawłowski, Piotr, Shane, Rebecca, Tangwancharoen, Suwat, Tsang, Manyee Betty, Baba, Hidetada, Hong, Byungsik, Kim, Young Jin, Lee, Hyo Sang, Otsu, Hideaki, Pelczar, Krzysztof, Sakurai, Hiroyoshi, Suzuki, Daisuke, Xiao, Zhigang, Yennello, Sherry J., Zhang, Yan, and SπRIT Collaboration

Published
2016
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14. Nuclear structure study for the neutron-rich nuclei beyond 132Sn: In-beam gamma-ray spectroscopy of 136Sn and 132Cd

Author

Wang He, Aoi Nori, Takeuchi Satoshi, Matsushita Masafumi, Doornenbal Pieter, Motobayashi Tohru, Steppenbeck David, Yoneda Kenichiro, Baba Hidetada, Dombrádi Zsolt, Kobayashi Kota, Kondo Yosuke, Lee Jenny, Liu Hong-Na, Minakata Ryogo, Nishimura Daiki, Otsu Hideaki, Sakurai Hiroyoshi, Sohler Dora, Sun Ye-Lei, Tian Zheng-Yang, Tanaka Ryuki, Vajta Zsolt, Yang Zai-Hong, Yamamoto Tetsuya, Ye Yan-Lin, and Yokoyama Rin

Subjects
Physics, QC1-999
Abstract

The neutron-rich nuclei 136Sn and 132Cd have been studied in the purpose of nuclear structure for the nuclei beyond the doubly-magic nucleus 132Sn. The 2+1 → 0+ gs transitions were identified for these two nuclei using in-beam γ-ray spectroscopy in coincidence with one- and two-proton removal reactions, respectively, at the RIKEN Radioactive Isotope Beam Factory. The 2+ 1 state in 136Sn is found to be similar to that for 134Sn indicating the seniority scheme may also hold for the heavy tin isotopes beyond N = 82. For 132Cd, the 2+ 1 state provides the first spectroscopic information in the even-even nuclei locating in the region “southeast” of 132Sn and the result is discussed in terms of proton-neutron configuration mixing. In both these two nuclei, it was found that the valence neutrons play an essential role in their low-lying excitations.

Published
2018
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15. Cross sections for nuclide production in proton- and deuteron-induced reactions on 93Nb measured using the inverse kinematics method

Author

Nakano Keita, Watanabe Yukinobu, Kawase Shoichiro, Wang He, Otsu Hideaki, Sakurai Hiroyoshi, Takeuchi Satoshi, Togano Yasuhiro, Nakamura Takashi, Maeda Yukie, Ahn Deuk Soon, Aikawa Masayuki, Araki Shouhei, Chen Sidong, Chiga Nobuyuki, Doornenbal Pieter, Fukuda Naoki, Ichihara Takashi, Isobe Tadaaki, Kawakami Shunsuke, Kin Tadahiro, Kondo Yosuke, Koyama Shunpei, Kubo Toshiyuki, Kubono Shigeru, Kurokawa Meiko, Makinaga Ayano, Matsushita Masafumi, Matsuzaki Teiichiro, Michimasa Shin'ichiro, Momiyama Satoru, Nagamine Shunsuke, Niikura Megumi, Ozaki Tomoyuki, Saito Atsumi, Saito Takeshi, Shiga Yoshiaki, Shikata Mizuki, Shimizu Yohei, Shimoura Susumu, Sumikama Toshiyuki, Söderström Pär-Anders, Suzuki Hiroshi, Takeda Hiroyuki, Taniuchi Ryo, Tsubota Jun'ichi, Watanabe Yasushi, Wimmer Kathrin, Yamamoto Tatsuya, and Yoshida Koichi

Subjects
Physics, QC1-999
Abstract

Isotopic production cross sections were measured for proton- and deuteron-induced reactions on 93Nb by means of the inverse kinematics method at RIKEN Radioactive Isotope Beam Factory. The measured production cross sections of residual nuclei in the reaction 93Nb + p at 113 MeV/u were compared with previous data measured by the conventional activation method in the proton energy range between 46 and 249 MeV. The present inverse kinematics data of four reaction products (90Mo, 90Nb, 88Y, and 86Y) were in good agreement with the data of activation measurement. Also, the model calculations with PHITS describing the intra-nuclear cascade and evaporation processes generally well reproduced the measured isotopic production cross sections.

Published
2017
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16. Cross section measurement of residues produced in proton- and deuteron-induced spallation reactions on 93Zr at 105 MeV/u using the inverse kinematics method

Author

Kawase Shoichiro, Watanabe Yukinobu, Wang He, Otsu Hideaki, Sakurai Hiroyoshi, Takeuchi Satoshi, Togano Yasuhiro, Nakamura Takashi, Maeda Yukie, Ahn Deuk Soon, Aikawa Masayuki, Araki Shouhei, Chen Sidong, Chiga Nobuyuki, Doornenbal Pieter, Fukuda Naoki, Ichihara Takashi, Isobe Tadaaki, Kawakami Shunsuke, Kin Tadahiro, Kondo Yosuke, Koyama Shunpei, Kubo Toshiyuki, Kubono Shigeru, Kurokawa Meiko, Makinaga Ayano, Matsushita Masafumi, Matsuzaki Teiichiro, Michimasa Shin'ichiro, Momiyama Satoru, Nagamine Shunsuke, Nakano Keita, Niikura Megumi, Ozaki Tomoyuki, Saito Atsumi, Saito Takeshi, Shiga Yoshiaki, Shikata Mizuki, Shimizu Yohei, Shimoura Susumu, Sumikama Toshiyuki, Söderström Pär-Anders, Suzuki Hiroshi, Takeda Hiroyuki, Taniuchi Ryo, Tsubota Jun'ichi, Watanabe Yasushi, Wimmer Kathrin, Yamamoto Tatsuya, and Yoshida Koichi

Subjects
Physics, QC1-999
Abstract

Isotopic production cross sections in the proton- and deuteron-induced spallation reactions on 93Zr at an energy of 105 MeV/u were measured in inverse kinematics conditions for the development of realistic nuclear transmutation processes for long-lived fission products (LLFPs) with neutron and light-ion beams. The experimental results were compared to the PHITS calculations describing the intra-nuclear cascade and evaporation processes. Although an overall agreement was obtained, a large overestimation of the production cross sections for the removal of a few nucleons was seen. A clear shell effect associated with the neutron magic number N = 50 was observed in the measured isotopic production yields of Zr and Y isotopes, which can be reproduced reasonably by the PHITS calculation.

Published
2017
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17. Spallation reaction study for fission products in nuclear waste: Cross section measurements for 137Cs, 90Sr and 107Pd on proton and deuteron

Author

Wang He, Otsu Hideaki, Sakurai Hiroyoshi, Ahn DeukSoon, Aikawa Masayuki, Ando Takashi, Araki Shouhei, Chen Sidong, Chiga Nobuyuki, Doornenbal Pieter, Fukuda Naoki, Isobe Tadaaki, Kawakami Shunsuke, Kawase Shoichiro, Kin Tadahiro, Kondo Yosuke, Koyama Shupei, Kubono Shigeru, Maeda Yukie, Makinaga Ayano, Matsushita Masafumi, Matsuzaki Teiichiro, Michimasa Shinichiro, Momiyama Satoru, Nagamine Shunsuke, Nakamura Takashi, Nakano Keita, Niikura Megumi, Ozaki Tomoyuki, Saito Atsumi, Saito Takeshi, Shiga Yoshiaki, Shikata Mizuki, Shimizu Yohei, Shimoura Susumu, Sumikama Toshiyuki, Söderström Pär-Anders, Suzuki Hiroshi, Takeda Hiroyuki, Takeuchi Satoshi, Taniuchi Ryo, Togano Yasuhiro, Tsubota Junichi, Uesaka Meiko, Watanabe Yasushi, Watanabe Yukinobu, Wimmer Kathrin, Yamamoto Tatsuya, and Yoshida Koichi

Subjects
Physics, QC1-999
Abstract

Spallation reactions for the long-lived fission products 137Cs, 90Sr and 107Pd have been studied for the purpose of nuclear waste transmutation. The cross sections on the proton- and deuteron-induced spallation were obtained in inverse kinematics at the RIKEN Radioactive Isotope Beam Factory. Both the target and energy dependences of cross sections have been investigated systematically. and the cross-section differences between the proton and deuteron are found to be larger for lighter fragments. The experimental data are compared with the SPACS semi-empirical parameterization and the PHITS calculations including both the intra-nuclear cascade and evaporation processes.

Published
2017
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19. Isotope production in proton-, deuteron-, and carbon-induced reactions on Nb 93 at 113 MeV/nucleon

Author

Nakano, Keita, Watanabe, Yukinobu, Kawase, Shoichiro, Wang, He, Otsu, Hideaki, Sakurai, Hiroyoshi, Takeuchi, Satoshi, Togano, Yasuhiro, Nakamura, Takashi, Maeda, Yukie, Ahn, Deuk Soon, Aikawa, Masayuki, Araki, Shouhei, Chen, Sidong, Chiga, Nobuyuki, Doornenbal, Pieter, Fukuda, Naoki, Ichihara, Takashi, Isobe, Tadaaki, Kawakami, Shunsuke, Kin, Tadahiro, Kondo, Yosuke, Koyama, Shunpei, Kubo, Toshiyuki, Kubono, Shigeru, Uesaka, Meiko, Makinaga, Ayano, Matsushita, Masafumi, Matsuzaki, Teiichiro, Michimasa, Shin'ichiro, Momiyama, Satoru, Nagamine, Shunsuke, Niikura, Megumi, Ozaki, Tomoyuki, Saito, Atsumi, Saito, Takeshi, Shiga, Yoshiaki, Shikata, Mizuki, Shimizu, Yohei, Shimoura, Susumu, Sumikama, Toshiyuki, Söderström, Pär Anders, Suzuki, Hiroshi, Takeda, Hiroyuki, Taniuchi, Ryo, Tsubota, Jun'ichi, Watanabe, Yasushi, Wimmer, Kathrin, Yamamoto, Tatsuya, and Yoshida, Koichi

Abstract

Isotope-production cross sections for p-, d-, and C-induced spallation reactions on Nb93 at 113 MeV/nucleon were measured using the inverse-kinematics method employing secondary targets of CH2, CD2, and C. The measured cross sections for Mo90, Nb90, Y86,88 produced by p-induced reactions were found to be consistent with those measured by the conventional activation method. We performed benchmark tests of the reaction models INCL-4.6, JQMD, and JQMD-2.0 implemented in the Particle and Heavy Ion Transport code System (PHITS) and of the nuclear data libraries JENDL-4.0/HE, TENDL-2017, and ENDF/B-VIII.0. The model calculations also showed generally good agreement with the measured isotope-production cross sections for p-, d-, and C-induced reactions. It also turns out that, among the three nuclear data libraries, JENDL-4.0/HE provides the best agreement with the measured data for the p-induced reactions. We compared the present Nb93 data with the Zr93 data, that were measured previously by the same inverse kinematics method (Kawase et al., Prog. Theor. Exp. Phys. 2017, 093D03 (2017)2050-391110.1093/ptep/ptx110), with particular attention to the effect of neutron-shell closure on isotope production in p- and d-induced spallation reactions. The isotopic distributions of the measured production cross sections in the Zr93 data showed noticeable jumps at neutron number N=50 in the isotopic chains of ΔZ=0 and -1, whereas no such jump appeared in isotopic chain of ΔZ=0 in the Nb93 data. From INCL-4.6 + GEM calculations, we found that the jump formed in the evaporation process is smeared out by the intranuclear cascade component in Nb91 produced by the Nb93(p,p2n) and (d,d2n) reactions on Nb93. Moreover, for Nb93, the distribution of the element-production cross sections as a function of the change in proton number ΔZ is shifted to smaller ΔZ than for Zr93, because the excited Nb prefragments generated by the cascade process are more likely to emit protons than the excited Zr prefragments, due to the smaller proton-separation energies of the Nb isotopes.

Published
2019

20. 225Ac production via 226Ra (<italic>μ</italic>−, <italic>n</italic><italic>ν</italic>) 225Fr reaction with 226Ra target.

Author

Matsuzaki, Teiichiro and Sakurai, Hiroyoshi

Abstract

Actinium-225 (225Ac) has attracted global attention due to its applications in cancer therapy. A new 225Ac production method is proposed by muon nuclear-capture reactions with negative muons (μ−) irradiating on a 226Ra target. The 225Fr is produced by 226Ra (μ−, nν) 225Fr reaction and decays to 225Ra. The 225Ra subsequently decays to 225Ac. The method produces no carrier-added 225Ac, and 213Bi from a 225Ac-213Bi generator. The production method by muon nuclear-capture reactions with the 226Ra target is described. The radioactivity of 225Ac and 213Bi are calculated assuming the reaction branching ratio of 226Ra (μ−, nν) 225Fr. [ABSTRACT FROM AUTHOR]

Published
2024
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22. Design of a superferric quadrupole magnet for the RIKEN RI-beam factory project

Author

Hirumachi, Tamiko, Tominaka, Toshiharu, Kubo, Toshiyuki, Sakurai, Hiroyoshi, Nagafuchi, Teruyasu, Kusaka, Kensuke, Okamura, Masahiro, Fujioka, Tsotomu, Tsuchihashi, Takahiro, Osaki, Osamu, Senba, Tomoyuki, and Suzuki, Shohei

Subjects
Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The design of a superferric quadrupole magnet for the RIKEN RI-beam factory project is described, taking into account the feasibility of coil winding.

Published
2000

23. Isotope production in proton-, deuteron-, and carbon-induced reactions on Nb93 at 113 MeV/nucleon

Author

Nakano, Keita, primary, Watanabe, Yukinobu, additional, Kawase, Shoichiro, additional, Wang, He, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Takeuchi, Satoshi, additional, Togano, Yasuhiro, additional, Nakamura, Takashi, additional, Maeda, Yukie, additional, Ahn, Deuk Soon, additional, Aikawa, Masayuki, additional, Araki, Shouhei, additional, Chen, Sidong, additional, Chiga, Nobuyuki, additional, Doornenbal, Pieter, additional, Fukuda, Naoki, additional, Ichihara, Takashi, additional, Isobe, Tadaaki, additional, Kawakami, Shunsuke, additional, Kin, Tadahiro, additional, Kondo, Yosuke, additional, Koyama, Shunpei, additional, Kubo, Toshiyuki, additional, Kubono, Shigeru, additional, Uesaka, Meiko, additional, Makinaga, Ayano, additional, Matsushita, Masafumi, additional, Matsuzaki, Teiichiro, additional, Michimasa, Shin'ichiro, additional, Momiyama, Satoru, additional, Nagamine, Shunsuke, additional, Niikura, Megumi, additional, Ozaki, Tomoyuki, additional, Saito, Atsumi, additional, Saito, Takeshi, additional, Shiga, Yoshiaki, additional, Shikata, Mizuki, additional, Shimizu, Yohei, additional, Shimoura, Susumu, additional, Sumikama, Toshiyuki, additional, Söderström, Pär-Anders, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Taniuchi, Ryo, additional, Tsubota, Jun'ichi, additional, Watanabe, Yasushi, additional, Wimmer, Kathrin, additional, Yamamoto, Tatsuya, additional, and Yoshida, Koichi, additional

Published
2019
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24. Coulomb breakup reactions of 93,94 Zr in inverse kinematics

Author

Takeuchi, Satoshi, Nakamura, Takashi, Shikata, Mizuki, Togano, Yasuhiro, Kondo, Yosuke, Tsubota, Junichi, Ozaki, Tomoyuki, Saito, Atsumi, Otsu, Hideaki, Wang, He, Sakurai, Hiroyoshi, Watanabe, Yukinobu, Kawase, Shoichiro, Ahn, Deuk Soon, Aikawa, Masayuki, Ando, Takashi, Araki, Shohei, Chen, Sidong, Chiga, Nobuyuki, Doornenbal, Pieter, Ebata, Shuichiro, Fukuda, Naoki, Isobe, Tadaaki, Kawakami, Shunsuke, Kin, Tadahiro, Koyama, Shunpei, Kubono, Shigeru, Maeda, Yukie, Makinaga, Ayano, Matsushita, Masafumi, Matsuzaki, Teiichiro, Michimasa, Shin'ichiro, Momiyama, Satoru, Nagamine, Shunsuke, Nakano, Keita, Niikura, Megumi, Ogata, Kazuyuki, Saito, Takeshi, Shiga, Yoshiaki, Shimizu, Yohei, Shimoura, Susumu, Sumikama, Toshiyuki, Söderstrom, Pär Anders, Suzuki, Hiroshi, Takeda, Hiroyuki, Taniuchi, Ryo, Uesaka, Meiko, Watanabe, Yasushi, Wimmer, Kathrin, Yamamoto, Tatsuya, and Yoshida, Koichi

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Coulomb breakup reactions of 93,94 Zr have been studied in inverse kinematics at incident beam energies of about 200 MeV/nucleon in order to evaluate neutron capture reaction methods. The 93 Zr(n,γ) 94 Zr reaction is particularly important as a candidate nuclear transmutation reaction for the long-lived fission product 93 Zr in nuclear power plants. One- and two-neutron removal cross sections on Pb and C targets were measured to deduce the inclusive Coulomb breakup cross sections, 375 ± 29 (stat.) ± 30 (syst.) and 403 ± 26 (stat.) ± 31 (syst.) mb for 93 Zr and 94 Zr, respectively. The results are compared with estimates using the standard Lorentzian model and microscopic calculations. The results reveal a possible contribution of the pygmy dipole resonance or giant quadrupole resonance in the Coulomb breakup reactions of 94 Zr.

Published
2019

25. カルシウム以下のN=32殻閉殻; 50Arの低励起構造

Author

Cort\'es, M. L., Rodriguez, W., Doornenbal, P., Obertelli, A., Holt, J. D., Men\'endez, J., Ogata, Kazuyuki, Schwenk, A., Shimizu, Noritaka, Simonis, J., Utsuno, Yutaka, Yoshida, Kazuki, Achouri, L., Baba, Hidetada, Browne, F., Calvet, D., Ch\^ateau, F., Chen, S., Chiga, Nobuyuki, Corsi, A., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, Tadaaki, Kobayashi, Takeo, Kubota, Yuki, Lapoux, V., Liu, H. N., Motobayashi, Toru, Murray, I., Otsu, Hideaki, Panin, V., Paul, N., Sakurai, Hiroyoshi, Sasano, Masaki, Steppenbeck, D., Stuhl, L., Sun, Y. L., Togano, Yasuhiro, Uesaka, Tomohiro, Wimmer, K., Yoneda, Kenichiro, Aktas, O., Aumann, T., Chung, L. X., Flavigny, F., Franchoo, S., Ga\v{s}pari\'c, I., Gerst, R.-B., Gibelin, J., Hahn, K. I., Kim, D., Koiwai, Takuma, Kondo, Yosuke, Koseoglou, P., Lee, J., Lehr, C., Linh, B. D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, Takashi, Park, S. Y., Rossi, D., Sahin, E., S\\\'oderstr\\\'om, P.-A., Sohler, D., Takeuchi, Satoshi, Toernqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, Hiroki, Yan, D., Yang, Z., Yasuda, Masahiro, and Zanetti, L.

Abstract

Low-lying excited states in the $N$ = 32 isotope $^{50}$Ar were investigated by in-beam $\gamma$-ray spectroscopy following proton- and neutron-knockout, multinucleon removal, and proton inelastic scattering at the RIKEN Radioactive Isotope Beam Factory. The energies of the two previously reported transitions have been confirmed, and five additional states are presented for the first time, including a candidate for a 3$^{-}$ state. The level scheme built using $\gamma$ $\gamma$ coincidences was compared to shell-model calculations in the $sd-pf$ model space and to {\it ab initio} predictions based on chiral two- and three-nucleon interactions. Theoretical proton- and neutron-knockout cross sections suggest that two of the new transitions correspond to 2$^{+}$ states, while the previously proposed 4$^{+}_{1}$ state could also correspond to a 2$^{+}$ state., 理化学研究所RIBFにおいて、$N$=32同位体である$^{50}$Arの低励起構造を陽子・中性子ノックアウト反応,多核子剥離反応,陽子非弾性散乱と$\gamma$線分光によって調査した。すでに知られていた2つに加えて、3$^{-}$状態の候補を含む5つの状態を新たに確認した。$\gamma$ $\gamma$ coincidenceによって得られた準位図は$sd-pf$模型空間での殻模型計算やカイラル2体・3体力による第一原理計算と比較した。陽子・中性子ノックアウト反応断面積の理論との比較により、新たに発見された2つの状態は2$^{+}$状態であり、また以前に4$^{+}_{1}$とされていた状態も2$^{+}$であることが示唆された。

Published
2020

26. 99Mo production via 99Tc (<italic>μ</italic>−,<italic> ν</italic>) 99Mo reaction with recycled 99Tc.

Author

Matsuzaki, Teiichiro and Sakurai, Hiroyoshi

Abstract

A new 99Mo production method is proposed through 99Tc (μ−, v) 99Mo muon nuclear-capture reaction with recycled 99Tc material. The 99Mo is a parent nucleus of 99mTc for imaging diagnostics. The 99Mo is produced in the 99Tc target, and the molybdate ion (MoO42−) is separated from the pertechnetate ion (99TcO4−). High 99Mo-specific activity is obtained, and no radioactive by-product is generated. The 99Tc material has an unlimited resource: it is a decay product of 99Mo and is contained in spent nuclear fuel. The 99Mo-specific activity and production activities of 99Mo and 99mTc are calculated assuming the reaction branching ratios. [ABSTRACT FROM AUTHOR]

Published
2024
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28. Angle-tunable wedge degrader for an energy-degrading RI beamline

Author

Hwang, Jongwon, primary, Michimasa, Shin’ichiro, additional, Ota, Shinsuke, additional, Dozono, Masanori, additional, Imai, Nobuaki, additional, Yoshida, Koichi, additional, Yanagisawa, Yoshiyuki, additional, Kusaka, Kensuke, additional, Ohtake, Masao, additional, Ahn, Deuk Soon, additional, Beliuskina, Olga, additional, Fukuda, Naoki, additional, Iwamoto, Chihiro, additional, Kawase, Shoichiro, additional, Kawata, Keita, additional, Kitamura, Noritaka, additional, Masuoka, Shoichiro, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Schrock, Philipp, additional, Sumikama, Toshiyuki, additional, Suzuki, Hiroshi, additional, Takaki, Motonobu, additional, Takeda, Hiroyuki, additional, Tsunoda, Rieko, additional, Wimmer, Kathrin, additional, Yako, Kentaro, additional, and Shimoura, Susumu, additional

Published
2019
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29. OEDO, the energy-degrading beamline at RI Beam Factory

Author

Michimasa, Shin’ichiro, primary, Hwang, Jongwon, additional, Yamada, Kazunari, additional, Ota, Shinsuke, additional, Dozono, Masanori, additional, Imai, Nobuaki, additional, Yoshida, Koichi, additional, Yanagisawa, Yoshiyuki, additional, Kusaka, Kensuke, additional, Ohtake, Masao, additional, Matsushita, Masafumi, additional, Ahn, Deuk Soon, additional, Beliuskina, Olga, additional, Chiga, Nobuyuki, additional, Chikaato, Kazuya, additional, Fukuda, Naoki, additional, Hayakawa, Seiya, additional, Ideguchi, Eiji, additional, Iribe, Kotaro, additional, Iwamoto, Chihiro, additional, Kawase, Shoichiro, additional, Kawata, Keita, additional, Kitamura, Noritaka, additional, Masuoka, Shoichiro, additional, Miyatake, Hiroari, additional, Nagae, Daisuke, additional, Nakajima, Ryo, additional, Nakamura, Takashi, additional, Nakano, Keita, additional, Omika, Shunichiro, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Schrock, Philipp, additional, Shimizu, Hideki, additional, Shimizu, Yohei, additional, Sumikama, Toshiyuki, additional, Sun, Xiaohui, additional, Suzuki, Daisuke, additional, Suzuki, Hiroshi, additional, Takaki, Motonobu, additional, Takechi, Maya, additional, Takeda, Hiroyuki, additional, Takeuchi, Satoshi, additional, Teranishi, Takashi, additional, Tsunoda, Rieko, additional, Wang, He, additional, Watanabe, Yukinobu, additional, Watanabe, Yutaka X., additional, Wimmer, Kathrin, additional, Yako, Kentaro, additional, Yamaguchi, Hidetoshi, additional, Yang, Lei, additional, Yoshida, Hiroya, additional, and Shimoura, Susumu, additional

Published
2019
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30. Coulomb breakup reactions of 93,94Zr in inverse kinematics

Author

Takeuchi, Satoshi, primary, Nakamura, Takashi, additional, Shikata, Mizuki, additional, Togano, Yasuhiro, additional, Kondo, Yosuke, additional, Tsubota, Junichi, additional, Ozaki, Tomoyuki, additional, Saito, Atsumi, additional, Otsu, Hideaki, additional, Wang, He, additional, Sakurai, Hiroyoshi, additional, Watanabe, Yukinobu, additional, Kawase, Shoichiro, additional, Ahn, DeukSoon, additional, Aikawa, Masayuki, additional, Ando, Takashi, additional, Araki, Shohei, additional, Chen, Sidong, additional, Chiga, Nobuyuki, additional, Doornenbal, Pieter, additional, Ebata, Shuichiro, additional, Fukuda, Naoki, additional, Isobe, Tadaaki, additional, Kawakami, Shunsuke, additional, Kin, Tadahiro, additional, Koyama, Shunpei, additional, Kubono, Shigeru, additional, Maeda, Yukie, additional, Makinaga, Ayano, additional, Matsushita, Masafumi, additional, Matsuzaki, Teiichiro, additional, Michimasa, Shin’ichiro, additional, Momiyama, Satoru, additional, Nagamine, Shunsuke, additional, Nakano, Keita, additional, Niikura, Megumi, additional, Ogata, Kazuyuki, additional, Saito, Takeshi, additional, Shiga, Yoshiaki, additional, Shimizu, Yohei, additional, Shimoura, Susumu, additional, Sumikama, Toshiyuki, additional, Söderstrom, Pär-Anders, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Taniuchi, Ryo, additional, Uesaka, Meiko, additional, Watanabe, Yasushi, additional, Wimmer, Kathrin, additional, Yamamoto, Tatsuya, additional, and Yoshida, Koichi, additional

Published
2019
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31. Spallation reaction study for the long-lived fission products in nuclear waste: Cross section measurements for 137 Cs, 90 Sr and 107 Pd using inverse kinematics method

Author

Wang, He, primary, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Ahn, DeukSoon, additional, Chiga, Nobuyuki, additional, Doornenbal, Pieter, additional, Fukuda, Naoki, additional, Isobe, Tadaaki, additional, Kubo, Toshiyuki, additional, Kubono, Shigeru, additional, Lorusso, Giusseppe, additional, Söderström, Pär-Anders, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Watanabe, Yasushi, additional, Yoshida, Koichi, additional, Matsuzaki, Teiichiro, additional, Shimizu, Yohei, additional, Sumikama, Toshiyuki, additional, Uesaka, Meiko, additional, Kawase, Shoichiro, additional, Nakano, Keita, additional, Watanabe, Yukinobu, additional, Araki, Shouhei, additional, Kin, Tadahiro, additional, Takeuchi, Satoshi, additional, Togano, Yasuhiro, additional, Nakamura, Takashi, additional, Kondo, Yosuke, additional, Ozaki, Tomoyuki, additional, Saito, Atsumi, additional, Tsubota, Junichi, additional, Aikawa, Masayuki, additional, Makinaga, Ayano, additional, Ando, Takashi, additional, Koyama, Shunpei, additional, Momiyama, Satoru, additional, Nagamine, Shunsuke, additional, Niikura, Megumi, additional, Saito, Takeshi, additional, Taniuchi, Ryo, additional, Wimmer, Kathrin, additional, Kawakami, Shunsuke, additional, Maeda, Yukie, additional, Yamamoto, Tatsuya, additional, Shiga, Yoshiaki, additional, Matsushita, Masafumi, additional, Michimasa, Shin’ichiro, additional, and Shimoura, Susumu, additional

Published
2017
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32. Study of proton- and deuteron-induced spallation reactions on the long-lived fission product 93Zr at 105 MeV/nucleon in inverse kinematics

Author

Kawase, Shoichiro, primary, Nakano, Keita, additional, Watanabe, Yukinobu, additional, Wang, He, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Ahn, Deuk Soon, additional, Aikawa, Masayuki, additional, Ando, Takashi, additional, Araki, Shouhei, additional, Chen, Sidong, additional, Chiga, Nobuyuki, additional, Doornenbal, Pieter, additional, Fukuda, Naoki, additional, Isobe, Tadaaki, additional, Kawakami, Shunsuke, additional, Kin, Tadahiro, additional, Kondo, Yosuke, additional, Koyama, Shunpei, additional, Kubono, Shigeru, additional, Maeda, Yukie, additional, Makinaga, Ayano, additional, Matsushita, Masafumi, additional, Matsuzaki, Teiichiro, additional, Michimasa, Shin'ichiro, additional, Momiyama, Satoru, additional, Nagamine, Shunsuke, additional, Nakamura, Takashi, additional, Niikura, Megumi, additional, Ozaki, Tomoyuki, additional, Saito, Atsumi, additional, Saito, Takeshi, additional, Shiga, Yoshiaki, additional, Shikata, Mizuki, additional, Shimizu, Yohei, additional, Shimoura, Susumu, additional, Sumikama, Toshiyuki, additional, Söderström, Pär-Anders, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Takeuchi, Satoshi, additional, Taniuchi, Ryo, additional, Togano, Yasuhiro, additional, Tsubota, Jun'ichi, additional, Uesaka, Meiko, additional, Watanabe, Yasushi, additional, Wimmer, Kathrin, additional, Yamamoto, Tatsuya, additional, and Yoshida, Koichi, additional

Published
2017
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33. Observation of cosmogenic nuclide Be-7 concentrations in the air at Bangkok and trajectory analysis of global air-mass motion

Author

Suzuki, Soichiro, primary, Sakurai, Hiroyoshi, additional, Tokanai, Fuyuki, additional, Inui, Emiko, additional, Hirofumi, Shimizu, additional, Masuda, Kimiaki, additional, Mitthumsiri, Warit, additional, Ruffolo, David, additional, MACATANGAY, Ronald, additional, Kikuchi, Satoshi, additional, and Kurebayashi, Yutaka, additional

Published
2017
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34. Low-lying Structures Of Exotic Sc Isotopes And The Evolution Of The N=34 Subshell Closure

Author

Steppenbeck, David, primary, Takeuchi, Satoshi, additional, Aoi, Nori, additional, Doornenbal, Pieter, additional, Matsushita, Masafumi, additional, Wang, He, additional, Baba, Hidetada, additional, Go, Shintaro, additional, Lee, Jenny, additional, Matsui, Keishi, additional, Michimasa, Shin'Ichiro, additional, Motobayashi, Tohru, additional, Nishimura, Daiki, additional, Otsuka, Takaharu, additional, Sakurai, Hiroyoshi, additional, Shiga, Yoshiaki, additional, Söderström, Pär-Anders, additional, Sumikama, Toshiyuki, additional, Taniuchi, Ryo, additional, Utsuno, Yutaka, additional, Valiente-Dobon, Jose Javier, additional, and Yoneda, Ken'ichiro, additional

Published
2017
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35. Measurements of Interaction Cross Sections for 19–27F Isotopes

Author

Homma, Akira, primary, Takechi, Maya, additional, Ohtsubo, Takashi, additional, Nishimura, Daiki, additional, Fukuda, Mitsunori, additional, Suzuki, Takeshi, additional, Yamaguchi, Takayuki, additional, Kuboki, Takamasa, additional, Ozawa, Akira, additional, Suzuki, Sinji, additional, Ooishi, Hiroto, additional, Moriguchi, Tetsuaki, additional, Sumikawa, Takashi, additional, Geissel, H., additional, Aoi, Nori, additional, Chen, Rui-jiu, additional, Fang, De-Qing, additional, Fukuda, Naoki, additional, Fukuoka, Shota, additional, Furuki, Hisahiro, additional, Inaba, Naruki, additional, Ishibashi, Nobuyuki, additional, Ito, Takeshi, additional, Izumikawa, Takuji, additional, Kameda, Daisuke, additional, Kubo, Toshiyuki, additional, Lantz, M., additional, Lee, C. S., additional, Ma, Yu-Gang, additional, Mihara, Mototsugu, additional, Momota, Satao, additional, Nagae, Daisuke, additional, Nishikiori, Ryo, additional, Niwa, Takahiro, additional, Ohnishi, Tetsuya, additional, Okumura, Kimitake, additional, Ogura, Toshiyuki, additional, Nagashima, Masayuki, additional, Sakurai, Hiroyoshi, additional, Sato, Kanae, additional, Shimbara, Yoshiriro, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Takeuchi, Satoshi, additional, Tanaka, Kenji, additional, Uenishi, Hideaki, additional, Winkler, M., additional, and Yanagisawa, Yoshiyuki, additional

Published
2017
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36. Spallation reaction study for the long-lived fission product 107Pd

Author

Wang, He, primary, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Ahn, DeukSoon, additional, Aikawa, Masayuki, additional, Ando, Takashi, additional, Araki, Shouhei, additional, Chen, Sidong, additional, Nobuyuki, Chiga, additional, Doornenbal, Pieter, additional, Fukuda, Naoki, additional, Isobe, Tadaaki, additional, Kawakami, Shunsuke, additional, Kawase, Shoichiro, additional, Kin, Tadahiro, additional, Kondo, Yosuke, additional, Koyama, Shunpei, additional, Kubono, Shigeru, additional, Maeda, Yukie, additional, Makinaga, Ayano, additional, Matsushita, Masafumi, additional, Matsuzaki, Teiichiro, additional, Michimasa, Shin'ichiro, additional, Momiyama, Satoru, additional, Nagamine, Shunsuke, additional, Nakamura, Takashi, additional, Nakano, Keita, additional, Niikura, Megumi, additional, Ozaki, Tomoyuki, additional, Saito, Atsumi, additional, Saito, Takeshi, additional, Shiga, Yoshiaki, additional, Shikata, Mizuki, additional, Shimizu, Yohei, additional, Shimoura, Susumu, additional, Sumikama, Toshiyuki, additional, Söderström, Pär-Anders, additional, Suzuki, Hiroshi, additional, Takeda, Hiroyuki, additional, Takeuchi, Satoshi, additional, Taniuchi, Ryo, additional, Togano, Yasuhiro, additional, Tsubota, Junichi, additional, Uesaka, Meiko, additional, Watanabe, Yasushi, additional, Watanabe, Yukinobu, additional, Wimmer, Kathrin, additional, Yamamoto, Tatsuya, additional, and Yoshida, Koichi, additional

Published
2017
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37. 「反転の島」の小さな陽子数側の岸と28Oにかけての減少した中性子の魔法性

Author

Doornenbal, P., Scheit, H., Takeuchi, Satoshi, Utsuno, Yutaka, Aoi, Nori, Li, K., Matsushita, Masafumi, Steppenbeck, D., Wang, H., Baba, Hidetada, Ideguchi, Eiji, Kobayashi, Nobuyuki, Kondo, Yosuke, Lee, J., Michimasa, Shinichiro, Motobayashi, Toru, Otsuka, Takaharu, Sakurai, Hiroyoshi, Takechi, Maya, Togano, Yasuhiro, and Yoneda, Kenichiro

Abstract

中性子数20の魔法数は$^{32}$Mg近傍の中性子過剰核領域で消失することが知られており、その一群の原子核は核図表における「反転の島」と呼ばれている。陽子数が10よりも小さな原子核が反転の島に含まれるかどうかを示す実験的証拠はこれまでなかった。この研究では、理化学研究所RIビームファクトリー(理研RIBF)にて生成された中性子過剰核$^{29}$Fのインビーム$\gamma$線分光から、$^{29}$Fの第一励起状態を初めて観測することに成功した。その励起エネルギーは1080(80)keVであり、中性子数20魔法数を仮定した計算による励起エネルギーの値である約3MeVよりも著しく小さいことから、この魔法数が消滅していることが明らかとなった。大規模殻模型計算によって励起エネルギーの実験値を再現することに成功するとともに、$^{29}$Fの基底状態および第一励起状態は中性子が2個殻ギャップから励起した状態によって支配されることがわかった。この第一励起状態は$^{28}$Oの第一励起状態に$d_{5/2}$軌道を占める陽子を結合させた状態が主であり、そのエネルギーが低いことから、$^{28}$Oは二重閉殻構造をもたないと考えられる。

Published
2017

38. 核子あたりsim 230MeVの30Neの一粒子ノックアウト反応から得られる減少因子の非対称度依存性

Author

Lee, J., Liu, H., Doornenbal, P., Kimura, Masaaki, Minomo, Kosho, Ogata, Kazuyuki, Utsuno, Yutaka, Aoi, Nori, Li, K., Matsushita, Masafumi, Scheit, H., Steppenbeck, D., Takeuchi, Satoshi, Wang, H., Baba, Hidetada, Ideguchi, Eiji, Kobayashi, Nobuyuki, Kondo, Yosuke, Michimasa, Shinichiro, Motobayashi, Toru, Sakurai, Hiroyoshi, Takechi, Maya, and Togano, Yasuhiro

Abstract

高速不安定核ビームのノックアウト反応は、不安定核の一粒子状態を調べるのによく用いられている反応である。しかし、ノックアウト反応から反応理論を通じて得られた分光学的因子は、殻模型などの核構造模型から得られるものに比べて一様に減少しており、その減少因子は核子の分離エネルギーに強く依存するという不思議な性質があることが知られている。そのメカニズムはまだ完全には理解されていない。従来の研究では、核子あたり約120MeV程度のビームを使って減少因子が測定されてきた。本研究では、理化学研究所にて、核子あたり200MeV以上のより高速なビームを用いて、$^{30}$Neからの一中性子および一陽子ノックアウト反応を調べた。そこで得られた減少因子を殻模型や反対性分子動力学による核構造計算を用いて導いたところ、従来研究と同様の減少因子があることがわかった。

Published
2016

39. Compilation of Nuclear Reaction Data from RIBF

Author

Makinaga, Ayano, primary, Ebata, Shuichiro, additional, Aikawa, Masayuki, additional, Furutachi, Naoya, additional, Ichinkhorloo, Dagvadorj, additional, Katō, Kiyoshi, additional, Odsuren, Myagmarjav, additional, Devi, Vidya, additional, Otuka, Naohiko, additional, Kohama, Akihisa, additional, Otsu, Hideaki, additional, and Sakurai, Hiroyoshi, additional

Published
2015
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40. Proton Inelastic Scattering on Island-of-Inversion Nuclei

Author

Michimasa, Shin’ichiro, primary, Yanagisawa, Yoshiyuki, additional, Inafuku, Kiyohiko, additional, Aoi, Nori, additional, Elekes, Zoltán, additional, Fülöp, Zsolt, additional, Ichikawa, Yuichi, additional, Iwasa, Naohito, additional, Kurita, Kazuyoshi, additional, Kurokawa, Meiko, additional, Machida, Tomohiro, additional, Motobayashi, Tohru, additional, Nakamura, Takashi, additional, Nakabayashi, Takumi, additional, Notani, Masahiro, additional, Ong, Hooi Jin, additional, Onishi, Takeo, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Shinohara, Mayuko, additional, Sumikama, Toshiyuki, additional, Takeuchi, Satoshi, additional, Tanaka, Kanenobu, additional, Togano, Yasuhiro, additional, Yamada, Kazunari, additional, Yamaguchi, Mitsutaka, additional, and Yoneda, Ken-ichiro, additional

Published
2015
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41. Hole States in16C Observed via One-Neutron Knockout of17C

Author

Satou, Yoshiteru, primary, Hwang, Jongwon, additional, Kim, Sunji, additional, Tshoo, Kyoungho, additional, Choi, Seonho, additional, Nakamura, Takashi, additional, Sugimoto, Takashi, additional, Kondo, Yosuke, additional, Matsui, Nobuyuki, additional, Hashimoto, Yoshiko, additional, Nakabayashi, Takumi, additional, Okumura, Toshifumi, additional, Shinohara, Mayuko, additional, Fukuda, Naoki, additional, Motobayashi, Toru, additional, Yanagisawa, Yoshiyuki, additional, Aoi, Nori, additional, Takeuchi, Satoshi, additional, Gomi, Tomoko, additional, Sakurai, Hiroyoshi, additional, Otsu, Hideaki, additional, Ishihara, Masayasu, additional, Togano, Yasuhiro, additional, Kawai, Shoko, additional, Ong, Hooi, additional, Onishi, Takeo, additional, Shimoura, Susumu, additional, Tamaki, Mitsuru, additional, Kobayashi, Toshio, additional, Matsuda, Yohei, additional, Endo, Natsumi, additional, and Kitayama, Mitsuhisa, additional

Published
2015
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42. Collectivity in the Neutron-Rich Pd Isotopes Towards N = 82

Author

Wang, He, primary, Aoi, Nori, additional, Takeuchi, Satoshi, additional, Matsushita, Masafumi, additional, Doornenbal, Pieter, additional, Motobayashi, Tohru, additional, Steppenbeck, David, additional, Yoneda, Kenichiro, additional, Baba, Hidetaba, additional, Cáceres, Lucia, additional, Dombrádi, Zsolt, additional, Kondo, Yosuke, additional, Lee, Jenny, additional, Li, Kuo-ang, additional, Liu, Hong-Na, additional, Minakata, Ryogo, additional, Nishimura, Daiki, additional, Otsu, Hideaki, additional, Sakaguchi, Satoshi, additional, Sakurai, Hiroyoshi, additional, Scheit, Heiko, additional, Sohler, Dora, additional, Sun, Ye-Lei, additional, Tian, Zheng-Yang, additional, Tanaka, Ryuki, additional, Togano, Yasuhiro, additional, Vajta, Zsolt, additional, Yang, Zai-Hong, additional, Yamamoto, Tetsuya, additional, Ye, Yan-Lin, additional, and Yokoyama, Rin, additional

Published
2015
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43. Study of the Nuclear Symmetry Energy at ρ ~ 2ρ0 with SπRIT-TPC

Author

Jhang, Genie, primary, Shane, Rebecca, additional, McIntosh, Alan, additional, Isobe, Tadaaki, additional, Barney, Jon, additional, Estee, Justin, additional, Nakatsuka, Noritsugu, additional, Powell, William, additional, Tangwancharoen, Suwat, additional, Baba, Hirotada, additional, Chajecki, Zbigniew, additional, Famiano, Michael, additional, Hong, Byungsik, additional, Lu, Fei, additional, Lynch, William G., additional, Murakami, Tetsuya, additional, Sakurai, Hiroyoshi, additional, Taketani, Atsushi, additional, Tsang, Manyee B., additional, Wang, Rensheng, additional, and Yennello, Sherry, additional

Published
2015
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44. Persistence of N = 50 Shell Closure in the Vicinity of 78Ni Studied by In-Beam γ-Ray Spectroscopy

Author

Shiga, Yoshiaki, primary, Yoneda, Ken-ichiro, additional, Steppenbeck, David, additional, Aoi, Nori, additional, Doornenbal, Pieter, additional, Lee, Jenny, additional, Liu, Hongna, additional, Matushita, Masafumi, additional, Takeuchi, Satoshi, additional, Wang, He, additional, Baba, Hidetada, additional, Bednarczyk, Piotr, additional, Dombradi, Zsolt, additional, Fulop, Zsolt, additional, Go, Shintaro, additional, Hashimoto, Takashi, additional, Ideguchi, Eiji, additional, Ieki, Kazuo, additional, Kobayashi, Kota, additional, Kondo, Yosuke, additional, Minakata, Ryogo, additional, Motobayashi, Tohru, additional, Nisimura, Daiki, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Sohler, Dora, additional, Sun, Yelei, additional, Tamii, Atsushi, additional, Tanaka, Ryuki, additional, Tian, Zhengyang, additional, Vajta, Zsolt, additional, Yamamoto, Tetsuya, additional, Yang, Xiaofei, additional, Yang, Zaihong, additional, Ye, Yanlin, additional, Yokoyama, Rin, additional, and Zenihiro, Juzo, additional

Published
2015
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45. In-Beam γ-Ray Spectroscopy of Very Neutron-Rich N = 32 and 34 Nuclei

Author

Steppenbeck, David, primary, Takeuchi, Satoshi, additional, Aoi, Nori, additional, Doornenbal, Pieter, additional, Matsushita, Masafumi, additional, Wang, He, additional, Baba, Hidetada, additional, Fukuda, Naoki, additional, Go, Shintaro, additional, Honma, Michio, additional, Lee, Jenny, additional, Matsui, Keishi, additional, Michimasa, Shin’ichiro, additional, Motobayashi, Tohru, additional, Nishimura, Daiki, additional, Otsuka, Takaharu, additional, Sakurai, Hiroyoshi, additional, Shiga, Yoshiaki, additional, Shimizu, Noritaka, additional, Söderström, Pär-Anders, additional, Sumikama, Toshiyuki, additional, Suzuki, Hiroshi, additional, Taniuchi, Ryo, additional, Utsuno, Yutaka, additional, Valiente-Dobón, Jose Javier, additional, and Yoneda, Ken’ichiro, additional

Published
2015
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47. Structural Evolution of the Pd Isotopes TowardsN= 82

Author

Wang, He, primary, Aoi, Nori, additional, Takeuchi, Satoshi, additional, Matsushita, Masafumi, additional, Doornenbal, Pieter, additional, Motobayashi, Tohru, additional, Steppenbeck, David, additional, Yoneda, Kenichiro, additional, Baba, Hidetaba, additional, Dombrádi, Zsolt, additional, Kobayashi, Kota, additional, Kondo, Yosuke, additional, Lee, Jenny, additional, Liu, Hong-Na, additional, Minakata, Ryogo, additional, Nishimura, Daiki, additional, Otsu, Hideaki, additional, Sakurai, Hiroyoshi, additional, Sohler, Dora, additional, Sun, Ye-Lei, additional, Tian, Zheng-Yang, additional, Tanaka, Ryuki, additional, Togano, Yasuhiro, additional, Vajta, Zsolt, additional, Yang, Zai-Hong, additional, Yamamoto, Tetsuya, additional, Ye, Yan-Lin, additional, and Yokoyama, Rin, additional

Published
2014
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48. Status of the EURICA Project After One Year at RIKEN

Author

Söderström, Pär-Anders, primary, Nishimura, Shunji, additional, Baba, Hidetada, additional, Browne, Frank, additional, Daido, Rie, additional, Doornenbal, Pieter, additional, Fang, Yifan, additional, Gey, Guillaume, additional, Isobe, Tadaaki, additional, Jung, Hyo-Soon, additional, Li, Zhihuan, additional, Lorusso, Giuseppe, additional, Lubos, Daniel, additional, Mochner, Kevin, additional, Patel, Zena, additional, Rice, Simon, additional, Sakurai, Hiroyoshi, additional, Sinclair, Laura, additional, Sumikama, Toshiyuki, additional, Taprogge, Jan, additional, Vajta, Zsolt, additional, Watanabe, Hiroshi, additional, Wu, Jin, additional, Xu, Zhengyu, additional, Yagi, Ayumi, additional, Yokoyama, Rin, additional, Yoshinaga, Kenta, additional, Benzoni, Giovanna, additional, Blazhev, Andrey, additional, Boutachkov, Plamen, additional, Bruce, Alison, additional, Gernhäuser, Roman, additional, Ideguchi, Eiji, additional, Jungclaus, Andrea, additional, Kim, Gi Dong, additional, Kim, Yong-Kyun, additional, Kojouharov, Ivan, additional, Kurz, Nikolaus, additional, Kwon, Young Kwan, additional, Lewitowicz, Marek, additional, Liu, Zhong, additional, Lozeva, Radomira, additional, Moon, Chang-Bum, additional, Niikura, Megumi, additional, Odahara, Atsuko, additional, Podolyák, Zsolt, additional, Regan, Patrick, additional, Roberts, Oliver, additional, Simpson, Gary, additional, Schaffner, Henning, additional, Townsley, Christopher, additional, and Wadsworth, Robert, additional

Published
2014
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50. Inelastic Scattering of 32 Mg at 190 MeV/Nucleon from a Thick Proton Target

Author

Heiko Scheit, K. Li, Takeshita Eri, Matsushita Masafumi, Pieter Doornenbal, Dan-Yang Pang, Takeuchi Satoshi, Sakurai Hiroyoshi, Motobayashi Tohru, Aoi Nori, and Yan-Lin Ye

Subjects
Physics, Proton, Nuclear Theory, General Physics and Astronomy, Deformation (meteorology), Inelastic scattering, Deep inelastic scattering, Inelastic neutron scattering, Nuclear physics, Excited state, Physics::Accelerator Physics, Atomic physics, Nuclear Experiment, Nucleon, Beam (structure)
Abstract

The first excited 2+ state (885 keV) of 32Mg and its corresponding deformation parameter β2 are studied with proton inelastic scattering at 190 MeV/nucleon using in-beam γ technology with a thick target. Angular distributions of the inelastic scattering cross sections are analyzed with coupled-channel calculations. The deformation parameter β2 = 0.41(3) obtained in this work agrees with the earlier experimental results obtained at lower beam energies. Our work demonstrates that the structure of unstable nuclei can be studied with proton inelastic scattering at high incident energies in the vicinity of 200 MeV/nucleon using thick targets.

Published
2012

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