• help
  • PC | SP
  • JP | EN
          
検索対象：     
報告書番号：
※ 半角英数字
 年 ～ 
 年
全てクリア
前の画面に戻る

Observation of high-$$j$$ quasiparticle states in $$^{249}$$Cm by in-beam $$gamma$$-ray spectroscopy using heavy-ion transfer reactions

重イオン核子移行反応を用いたインビーム$$gamma$$線分光による$$^{249}$$Cmにおける高角運動量の準粒子状態の観測

石井 哲朗  ; 牧井 宏之*; 浅井 雅人  ; 塚田 和明  ; 豊嶋 厚史; 松田 誠  ; 牧嶋 章泰*; 重松 宗一郎*; 金子 順一*; 静間 俊行; 當銘 勇人*; Hossain, I.*; 河野 俊之*; 小川 雅生*

Ishii, Tetsuro; Makii, Hiroyuki*; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Matsuda, Makoto; Makishima, Akiyasu*; Shigematsu, Soichiro*; Kaneko, Junichi*; Shizuma, Toshiyuki; Tome, Hayato*; Hossain, I.*; Kono, Toshiyuki*; Ogawa, Masao*

We have measured deexcitation $$gamma$$ rays in $$^{249}$$Cm populated by one-neutron stripping reactions with a $$^{248}$$Cm target and a 162 MeV $$^{16}$$O, a 162 MeV $$^{18}$$O, and a 120 MeV $$^{13}$$C beams. $$gamma$$ rays in $$^{249}$$Cm were identified by measuring kinetic energies of outgoing particles using Si $$Delta E$$-$$E$$ detectors. It was demonstrated that high-$$j$$ orbitals were selectively populated in the ($$^{16}$$O,$$^{15}$$O) reaction having a large negative $$Q$$ value. We have observed eight quasi-particle states above the deformed shell gap of $$N=152$$. The 1/2$$^{+}$$[620], 1/2$$^{-}$$[750], and 7/2$$^{+}$$[613] bands were extended up to 19/2$$^{+}$$, 19/2$$^{-}$$, and 13/2$$^{+}$$ states, respectively. We have established the 9/2 9/2$$^{+}$$[615] state at 526 keV, the 9/2 9/2$$^{+}$$[604] state with a short life of $$T_{1/2}ll 2$$ ps at 1030 keV, and the 11/2 11/2$$^{-}$$[725] state with $$T_{1/2}=19(1)$$ ns at 375 keV. Furthermore, the 17/2 1/2$$^{+}$$[880] state, having a large component of the $$k_{17/2}$$ spherical single-particle state, has been identified at 1505 keV. We discuss the properties of those quasi-particle states in the framework of a deformed shell model.

使用言語

 :

English

掲載資料名

 :

Physical Review C

巻

 :

78

号

 :

5

ページ数

 :

p.054309_1 - 054309_11

発行年月

 :

2008/11

発表会議名

 :

開催年月

 :

開催都市

 :

開催国

 :

キーワード

 :

no keyword

特許データ

 :

PDF

 :


論文URL

 :

https://doi.org/10.1103/PhysRevC.78.054309

研究データの公開先DOI

 :

本成果にかかわる研究データのリンクです。

使用施設

 :

タンデム加速器  

広報プレスリリース

 :

論文解説記事
(成果普及情報誌)

 :

受委託・共同研究相手機関

 :

東京工業大学

Access

 :

- Accesses

InCites™

 :

パーセンタイル：67.60

分野：Physics, Nuclear

Altmetrics

 :

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.

前の画面に戻る