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論文

Producing gold at ISOLDE-CERN

Barzakh, A. E.*; Andreyev, A. N.; Atanasov, D.*; Cubiss, J. G.*; Harding, R. D.*; Al Monthery, M.*; Althubiti, N. A.*; Andel, B.*; 他38名*

Nuclear Instruments and Methods in Physics Research B, 513, p.26 - 32, 2022/02

 被引用回数:0 パーセンタイル:0.02(Instruments & Instrumentation)

The yield of 18 beams of radioactive gold nuclei produced by irradiating the ISOLDE uranium target with 1.4-GeV protons was measured. The production-efficiency dependence on the half-life was derived using the in-target production calculations. Three release models were tested to describe the results. Irregularities in the efficiency curve for 3 long-lived high-spin gold isomers ($$^{187,191,193}$$Au$$^m$$) were found, which require further investigation.

論文

Measurement of the $$Lambda$$ spin-flip $$B(M1)$$ value in hypernuclei

佐々木 侑輝*; 江川 弘行; 長谷川 勝一; 早川 修平; 細見 健二; 市川 裕大; 今井 憲一; 佐甲 博之; 佐藤 進; 杉村 仁志; et al.

JPS Conference Proceedings (Internet), 8, p.022013_1 - 022013_4, 2015/09

A hypernuclear $$gamma$$-ray spectroscopy experiment (E13) will be performed using $$K^-$$ beam at the K1.8 beam line of the J-PARC Hadron Experimental Facility in 2015. In this experiment, we will determine the $$B(M1)$$ value of the $$Lambda$$ spin-flip transition of the ground state doublet in $$^{19}_{Lambda}F$$ to investigate the magnetic moment of a $$Lambda$$ hyperon in nuclei. In order to check the performance of the whole spectrometer system of E13, a commissioning run was performed at the K1.8 beam line in 2013. We confirmed that the E13 setup is almost ready for the next beam time in 2015. In particular, new detectors for suppressing events from the two main $$K^-$$ decay modes in the on-line and off-line analyses are installed. As a result, the signal to noise ratio of $$gamma$$ spectra is drastically improved, and the sensitivity to the $$B(M1)$$ measurement is expected to increase.

論文

A Possible breakthrough of power handling by plasma shaping in tokamak

菊池 満; Fasoli, A.*; 滝塚 知典*; Diamond, P. H.*; Medvedev, S.*; Wu, Y.*; Duan, X.*; 岸本 泰明*; 花田 和明*; Pueschel, M. J.*; et al.

Proceedings of 8th IAEA Technical Meeting on Steady State Operation of Magnetic Fusion Devices (CD-ROM), 20 Pages, 2015/05

D型形状でHモード運転の標準的なトカマクは優れた閉じ込め性能を示すものの、過渡的、定常的な熱負荷の問題で大きな課題を持っている。これらを解決する方法として将来を見据えた幅ひろい考え方として形状制御を用いて熱制御を緩和する方式について講演する。

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