质子滴线区新核素^(25)P的鉴别  

Identification of New Nuclide^(25)P in Region of Proton Drip Line

作　　者：肖国青[1] 詹文龙[1] 郭忠言[1] 孙志宇[1] 李家兴[1] 王金川[1] 王全进[1] 孟祥伟[1] 江山红[1] 宁振江[1] 王猛[1] 陈志强[1] 王建丰 王建松[1] 田文栋[1] 王武生[1] 毛瑞士[1] 靳根明[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《原子核物理评论》2000年第4期259-261,共3页Nuclear Physics Review

基　　金：国家杰出青年基金(19825115);国家自然科学基金资助项目(19804012);国家重点基金项目(19735010);中国科学院九五重大基金项目;中国科学院青年实验室基金;973国家重点基础研究发屣项目(G2000077401、G2000077404)

摘　　要：在兰州放射性束流装置 RIBLL上 ,利用磁刚度 Bρ、飞行时间 t TOF和多重望远镜ΔE- E联合探测方法测量了 69Me V/u36Ar轰击 Be靶产生的 P同位素碎片的同位素分布 ,并与 EPAX经验公式的计算结果进行了比较 ,在质子滴线区首次鉴别出了新核素 2 5P.The mass distribution of the phosphor fragments induced by projectile fragmentation reaction of 69 MeV/u 36 Ar + 9Be was measured at the projectile fragment separator RIBLL at IMP. The fragment products were identified by determining the magnetic rigidity Bρ , the time of flight t TOF and their energy loss Δ E . The experimental isotope distribution was compared to the result of the empirical parameterization EPAX. Three events for the new nuclide 25 P in the region of proton drip line were found in experiment of five days.

关 键 词：新核素 P同位素分布 质子滴线 

分 类 号：O571.2[理学—粒子物理与原子核物理]