利用^(15)N(d,p)^(16)N反应研究^(16)F低能级质子宽度  

Proton Width of^(16)F Low-lying State from^(15)N(d,p)^(16)N

作　　者：李鑫悦 郭冰[1] 李志宏[1] 李云居[1] 苏俊 庞丹阳 颜胜权[1] 樊启文[1] 刘建成[1] 甘林[4] 韩治宇[1] 李二涛[4] 连钢[1] 谌阳平 王友宝[1] 曾晟[1] 柳卫平[1] LI Xinyue;GUO Bing;LI Zhihong;LI Yunju;SU Jun;PANG Danyang;YAN Shengquan;FAN Qiwen;LIU Jiancheng;GAN Lin;HAN Zhiyu;LI Ertao;LIAN Gang;SHEN Yangping;WANG Youbao;ZENG Sheng;LIU Weiping(China Institute of Atomic Energy,Beijing 102413,China;Beijing Normal University,Beijing 100875,China;Beihang University,Beijing 100191,China;Shenzhen University,Shenzhen 518060,China)

机构地区：[1]中国原子能科学研究院,北京102413 [2]北京师范大学,北京100875 [3]北京航空航天大学,北京100191 [4]深圳大学,广东深圳518060

出　　处：《原子能科学技术》2021年第3期391-396,共6页Atomic Energy Science and Technology

基　　金：国家重点研发计划资助项目(2016YFA0400502);国家自然科学基金资助项目(11975316,11490561,11775013,11961141003,U1867214);财政部稳定支持研究经费资助项目(WDJC-2019-13)。

摘　　要：^(16)F是质子滴线附近的奇特原子核,它的所有态均不稳定,会发生质子衰变。目前^(16)F前4个态的自旋宇称及激发能已通过实验精确测定,但能级宽度仍存在较大分歧。本工作通过^(15)N(d,p)^(16)N反应角分布的高精度测量,确定了^(16)N基态和前3个激发态的谱因子;进而根据镜像核的电荷对称性,用^(16)N的中子谱因子导出了^(16)F基态和前3个激发态的质子宽度分别为(29.9±4.1)keV、(108±13)keV、(5.04±0.48)keV和(14.5±1.4)keV。本工作通过一个独立的实验方法为^(16)F的质子宽度提供了一个重要的交叉检验。^(16)F is an exotic nucleus near the proton drip line.All states of^(16)F are unstable and can decay by proton emission.Up to now,the spin-parity values and excitation energy of the four low-lying states in^(16)F have been determined by experiment.However,discrepancies still exist among proton widths.The^(15)N(d,p)^(16)N angular distributions were measured precisely.The neutron spectroscopic factors of^(16)N ground state and first three excited states were determined.The proton widths of the four low-lying states of^(16)F were deduced to be(29.9±4.1)keV,(108±13)keV,(5.04±0.48)keV and(14.5±1.4)keV,respectively,according to the charge symmetry of mirror nuclei.The present results provide important crosscheck for the proton widths of^(16)F experimentally.

关 键 词：转移反应 角分布 谱因子 质子宽度 

分 类 号：O571[理学—粒子物理与原子核物理]