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Isomer spectroscopy using relativistic projectile fragmentation at the N=Z line for A$$sim$$80$$rightarrow$$90

質量数80-90をもつN=Z領域核における相対論的核破砕反応を用いた核異性体分光

Regan, P. H.*; Garnsworthy, A. B.*; Pietri, S.*; Caceres, L.*; G$'o$rska, M.*; Rudolph, D.*; Podoly$'a$k, Zs.*; Steer, S. J.*; Hoischen, R.*; Gerl, J.*; Wollersheim, H. J.*; Grebosz, J.*; Schaffner, H.*; Prokopowicz, W.*; Kojouharov, I.*; Becker, F.*; Bednarczyk, P.*; Doornenbal, P.*; Geissel, H.*; Grawe, H.*; Kelic, A.*; Kurz, N.*; Montes, F.*; 斉藤 武彦*; Tashenov, S.*; Werner-Malento, E.*; Heinz, A.*; Atanasova, L.*; Balabanski, D.*; Benzoni, G.*; Blank, B.*; Blazhev, A.*; Brandau, C.*; Bruce, A. M.*; Catford, W. N.*; Camera, F.*; Cullen, I. J.*; Estevez, M. E.*; Fahlander, C.*; Gelletly, W.*; Ilie, G.*; Jungclaus, A.*; Jolie, J.*; Kurtukian-Nieto, T.*; Liu, Z.*; Kmiecik, M.*; Maj, A.*; Myalski, S.*; Schwertel, S.*; 静間 俊行; Simons, A. J.*; Walker, P. M.*; Wieland, O.*

Regan, P. H.*; Garnsworthy, A. B.*; Pietri, S.*; Caceres, L.*; G$'o$rska, M.*; Rudolph, D.*; Podoly$'a$k, Zs.*; Steer, S. J.*; Hoischen, R.*; Gerl, J.*; Wollersheim, H. J.*; Grebosz, J.*; Schaffner, H.*; Prokopowicz, W.*; Kojouharov, I.*; Becker, F.*; Bednarczyk, P.*; Doornenbal, P.*; Geissel, H.*; Grawe, H.*; Kelic, A.*; Kurz, N.*; Montes, F.*; Saito, Takehiko*; Tashenov, S.*; Werner-Malento, E.*; Heinz, A.*; Atanasova, L.*; Balabanski, D.*; Benzoni, G.*; Blank, B.*; Blazhev, A.*; Brandau, C.*; Bruce, A. M.*; Catford, W. N.*; Camera, F.*; Cullen, I. J.*; Estevez, M. E.*; Fahlander, C.*; Gelletly, W.*; Ilie, G.*; Jungclaus, A.*; Jolie, J.*; Kurtukian-Nieto, T.*; Liu, Z.*; Kmiecik, M.*; Maj, A.*; Myalski, S.*; Schwertel, S.*; Shizuma, Toshiyuki; Simons, A. J.*; Walker, P. M.*; Wieland, O.*

$$^{208}$$Pbの核破砕反応を用いてN$$approx$$126を持つ中性子過剰核を生成した。反跳質量分析器を用いて生成核種の分離を行い、アイソマーからの崩壊$$gamma$$線をゲルマニウム検出器により測定した。その結果、N=126閉殻核である中性子過剰核$$^{204}$$Ptの励起状態に関する核構造情報を得た。実験結果とシェルモデル計算の結果について報告する。

Relativistic energy projectile fragmentation of $$^{208}$$Pb has been used to produce neutron-rich nuclei with N$$approx$$126. The nuclei of interest were studied by detecting delayed $$gamma$$ rays following the decay of isomeric states. Experimental information on the excited states of the neutron-rich $$^{204}$$Pt N=126 nucleus, following internal decay of two isomeric states, was obtained for the first time. Raw experimental data and shell-model calculations are presented.

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パーセンタイル:8.33

分野:Physics, Nuclear

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