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OKondo, Yosuke*; Achouri, N. L.*; Al Falou, H.*; Atar, L.*; Aumann, T.*; Baba, Hidetada*; Boretzky, K.*; Caesar, C.*; Calvet, D.*; Chae, H.*; et al.
Nature, 620(7976), p.965 - 970, 2023/08
Times Cited Count：6 Percentile：93.26(Multidisciplinary Sciences)no abstracts in English
Ne at the transition into the island of inversion; Detailed structure study of NeWang, H.*; Yasuda, Masahiro*; Kondo, Yosuke*; Nakamura, Takashi*; Tostevin, J. A.*; Ogata, Kazuyuki*; Otsuka, Takaharu*; Poves, A.*; Shimizu, Noritaka*; Yoshida, Kazuki; et al.
Physics Letters B, 843, p.138038_1 - 138038_9, 2023/08
Times Cited Count：2 Percentile：83.53(Astronomy & Astrophysics)Detailed 
-ray spectroscopy of the exotic neon isotope Ne has been performed using the one-neutron removal reaction from Ne. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N = 20 and N = 28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.
Wang, H.*; Otsu, Hideaki*; Chiga, Nobuyuki*; Kawase, Shoichiro*; Takeuchi, Satoshi*; Sumikama, Toshiyuki*; Koyama, Shumpei*; Sakurai, Hiroyoshi*; Watanabe, Yukinobu*; Nakayama, Shinsuke; et al.
Communications Physics (Internet), 2(1), p.78_1 - 78_6, 2019/07
Times Cited Count：8 Percentile：55.71(Physics, Multidisciplinary)Searching for effective pathways for the production of proton- and neutron-rich isotopes through an optimal combination of reaction mechanism and energy is one of the main driving forces behind experimental and theoretical nuclear reaction studies as well as for practical applications in nuclear transmutation of radioactive waste. We report on a study on incomplete fusion induced by deuteron, which contains one proton and one neutron with a weak binding energy and is easily broken up. This reaction study was achieved by measuring directly the cross sections for both proton and deuteron for 
Pd at 50 MeV/u via inverse kinematics technique. The results provide direct experimental evidence for the onset of a cross-section enhancement at high energy, indicating the potential of incomplete fusion induced by loosely-bound nuclei for creating proton-rich isotopes and nuclear transmutation of radioactive waste.
Strasser, P.*; Abe, Mitsushi*; Aoki, Masaharu*; Choi, S.*; Fukao, Yoshinori*; Higashi, Yoshitaka*; Higuchi, Takashi*; Iinuma, Hiromi*; Ikedo, Yutaka*; Ishida, Katsuhiko*; et al.
EPJ Web of Conferences, 198, p.00003_1 - 00003_8, 2019/01
Times Cited Count：13 Percentile：98.93(Quantum Science & Technology)
Np sample in cores of TCA and FCASakurai, Takeshi; Mori, Takamasa; Okajima, Shigeaki; Tani, Kazuhiro*; Suzaki, Takenori*; Saito, Masaki*
Journal of Nuclear Science and Technology, 46(6), p.624 - 640, 2009/06
Times Cited Count：5 Percentile：35.91(Nuclear Science & Technology)Takano, Toyoji*; Fuse, Keisuke*; Saito, Akira*; Sato, Yoshikazu*
JNC TJ7420 2005-100, 109 Pages, 2001/03
JNC-TJ7420-2005-100.pdf:15.15MB
no abstracts in English
Takano, Toyoji*; Fuse, Keisuke*; Saito, Akira*; Sato, Yoshikazu*; Sakuma, Koji*; Yasuda, Kenya*
JNC TJ7420 2005-019, 782 Pages, 1999/12
no abstracts in English
-Project), 13; Np sample worth measurements at TCA and FCASakurai, Takeshi; Tani, Kazuhiro*; Okajima, Shigeaki; Mori, Takamasa; Saito, Masaki*
no journal, ,
no abstracts in English
Np sample reactivity worth at TCA and FCA in JAEAMori, Takamasa; Sakurai, Takeshi; Okajima, Shigeaki; Tani, Kazuhiro*; Suzaki, Takenori*; Saito, Masaki*
no journal, ,
no abstracts in English
Np sample reactivity worth at TCA and FCA in JAEASakurai, Takeshi; Mori, Takamasa; Okajima, Shigeaki; Tani, Kazuhiro*; Suzaki, Takenori*; Saito, Masaki*
no journal, ,
Kubo, Jun*; Kubota, Yumi*; Okada, Akinori*; Kureta, Masatoshi; Iikura, Hiroshi; Suzuki, Hiroshi; Saito, Toru*
no journal, ,
Development of a fuel-efficient car is indispensable for the growth of the sustainable mobility society. We have carried out the visualization of the lubricating oil in a car engine and the measurement of the residual stress using neutron beam in order to reduce the friction and weight. We succeeded the high-speed visualization of the lubrication oil in the high-speed running engines by the high-frame-rate neutron radiography technique. We also measured the residual stress in the cylinder head at every material and made a database.
Hiraoka, Hirokazu; Kawasaki, Kohei*; Kimura, Masanori; Togawa, Orihiko; Saito, Shota; Ezaki, Iwao*
no journal, ,
When the nuclear emergency occurs, inhabitants take the contamination inspection to evacuate. A large number of vehicle will come to the inspection area and make there congested. To do the quick inspection, simultaneous measurement of tires and wipers using the portable radiation portal monitors for vehicles is a key point. Consequently, we attempted the count rates obtained from tires and wipers are discriminated. First, the vehicle was driven at 5 km/h and the -ray counts rate was measured by the monitor. 
Ba sources were attached around the tire or on the wiper and measurements were taken 30 times each. Next, discrimination conditions based on a linear function were applied to the normalized count rates, with the maximum count rate of the measured values (Net value) set to 1.0, to evaluate the discrimination accuracy between the tire and the wiper. The evaluation results showed that the pattern with the source attached around the tire correctly discriminated 29 out of 30 times, while the pattern with the source attached on the wiper correctly discriminated 20 out of 30 times. It was found that in order to improve the accuracy of discrimination, the measurement method must be improved so that there is a large difference between measured values of the tire and the wiper.
Kawasaki, Kohei*; Hiraoka, Hirokazu; Ezaki, Iwao*; Kimura, Masanori; Togawa, Orihiko; Saito, Shota
no journal, ,
Vehicles carrying evacuees during a nuclear emergency are subject to contamination inspections, and the operation of screening by measuring tires and wiper are required. The introduction of portable radiation portal monitors for vehicles is expected to be quick tire inspections, however, it is difficult to inspect the tire and the wiper at the same time, so further speeding up the inspection process is an issue. In this study, we attempted to discriminate each type of contamination by using a different the new set up of detectors for the purpose of simultaneous inspection of tires and wiper. We will report the usefulness of the new set up and the results of simulation calculations of detector response under realistic contamination assumptions.
Hiraoka, Hirokazu; Kawasaki, Kohei*; Kimura, Masanori; Togawa, Orihiko; Saito, Shota; Ezaki, Iwao*
no journal, ,
In nuclear emergency, vehicles which evacuating inhabitants use be taken the contamination inspection. For the quick inspection, it seems that realization of simultaneous inspection of tires and wipers by portable radiation portal monitors for vehicles is necessary. In order to fulfill the simultaneous inspection, the authors develop the measuring method which is able to suitably distinguish and evaluate each contamination. Monte Carlo simulation showed ahead that the new set-up of detectors improves the discriminative ability for contamination. In this study, based on the simulation results, the authors attached radiation sources to a vehicle, and verified the ability by the new-setup. As a result, the ability improved compared to one of the usual method.
