Excited States in Neutron-Deficient ¹⁹⁷Bi

• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: ISOMER LEVEL SCHEME γ-γ-l COINCIDENCE
• 年，卷（期）: 1995,（4）
• 页码范围: 328-335
• 页数: 8页
• 分类号: O4

摘要

【正】 The high-spin states in ¹⁹⁷Bi are studied with the ¹⁹⁷Re(¹⁶O, 6n) reaction, theenergies of ¹⁶O being between 85 and 105 MeV. In-beam measurements of γ-ray excitation func-tions, γ-γ-t coincidences and γ-ray angular distributions are performed with six BGO （AC）HPGe detectors and one intrinsic Ge planar detector. Eleven new transitions and three new iso-mers at 2089, 2357 and 1968+△keV with T_1/2=19, 34±4, 9, 53, 4±20. 5 and 18. 04±3. 1 ns,respectively, are observed, and a level scheme established. In addition, a half-life of 36. 7±7.0 ns was determined for the first time for the previously established 2065 keV isomer.