Measurements on diproton emission from the break-up channels of ^(23)Al and ^(22)Mg
Measurements on diproton emission from the break-up channels of ^(23)Al and ^(22)Mg
摘要
Two-proton relative momentum distributions from the break-up channels 23Al→p+p+21Na and 22Mg→p+p+20Ne at an energy of 60-70 A MeV have been measured together with two-proton opening angles at the projectile fragment separator beamline (RIPS) in the RIKEN Ring Cyclotron Facility. The results demonstrate the existence of diproton emission component from single-step 2He for highly excited 23Al and 22Mg.
Two-proton relative momentum distributions from the break-up channels 23Al→p+p+21Na and 22Mg→p+p+20Ne at an energy of 60-70 A MeV have been measured together with two-proton opening angles at the projectile fragment separator beamline (RIPS) in the RIKEN Ring Cyclotron Facility. The results demonstrate the existence of diproton emission component from single-step 2He for highly excited 23Al and 22Mg.
基金
supported by the National Natural Science Foundation of China (Grant Nos. 10775167, 10775168, 10979074, 10405032, 10747163, 10805067 and 10605036)
the Major State Basic Research Development Program of China (Grant No. 2007CB815004)
the Shanghai Development Foundation for Science and Technology (Grant No. 09JC1416800)
参考文献47
-
1S. Michimasa,S. Kubono,S.H. Park,T. Teranishi,Y. Yanagisawa,N. Imai,Zs. Fül?p,X. Liu,T. Minemura,C.C. Yun,J.M. D’Auria,K.P. Jackson.Measurement of the 24Mg(p, t)22Mg reaction for the states near the 21Na + p threshold[J]. The European Physical Journal A . 2002 (3)
-
2M. Wiescher,K. Langanke.The proton capture reactions on21Na and22Na under hydrogen burning conditions[J]. Zeitschrift für Physik A Atomic Nuclei . 1986 (3)
-
3Gade A,Adrich P,Bazin D, et al.In-beam γ-ray spectroscopy at the proton dripline: 23Al. Physics Letters B . 2008
-
4Caggiano J A,Bazin D,Benenson W, et al.Spectroscopy of 23Al and 27P using the (7Li, 8He) reaction and the implications for 22Na and 26Al nucleosynthesis in explosive hydrogen burning. Physical Review C Nuclear Physics . 2001
-
5Gomi T,Motobayashi T,Ando Y, et al.Coulomb Dissociation of 23Al for the stellar 22Mg (p, γ )23Al reaction. Nuclear Physics A Nuclear and Hadronic Physics . 2005
-
6Wiescher M,G-rres J,Schatz H.Break-out reactions from the CNO cycles. Journal of Irish Colleges of Physicians and Surgeons . 1999
-
7Paddock R A.(p,t) reaction on even-even N=Z nuclei in the 2s1d shell. Physical Review C Nuclear Physics . 1972
-
8Bateman N,Abe K,Ball G, et al.Measurement of the 24Mg (p, t)22Mg reaction and implications for the 21Na (p, γ)22Mg stellar reaction rate. Physical Review C Nuclear Physics . 2001
-
9Davids B,Beijers J P M,van den Berg A M, et al.Proton-decaying states in 22Mg and the nucleosynthesis of 22Na in novae. Physical Review C Nuclear Physics . 2003
-
10Berg G P A,Hatanaka K,Wiescher M, et al.Resonance states in 22Mg for reaction rates in the rp-process. Nuclear Physics A Nuclear and Hadronic Physics . 2003
-
1Fang Deqing,Ma Chunwang,Fu Yaoa,Ma Yugang,Cai Xiangzhou,Guo Wei,Liu Guihua,Shi Yu,Tian Wendong,Wang Hongwei,Fan Ruirui,Fu Fen,Gao Hui,Gao Qi,Guo Wentao,Han Jianlong,Hu Zhengguo,Huang Tianhen,Jia Fei,Lei Xiangguo,Li Bo,Sun Zhiyu,Wang Meng,Wang Jiansong,Xiao Zhigang,Xu Zhiguo,Yao Xiangwu,Zhang Hongbin,Zhang Xueheng,Zheng Chuan,Xu Hushan,Xiao Guoqing,Zhan Wenlong.Measurements of Reaction Cross Section and Fragment Momentum Distribution for Proton-rich Nucleus ^31Cl[J].近代物理研究所和兰州重离子加速器实验室年报：英文版,2007(1):37-37.
-
2魏宝文,叶峰,张恩厚,马受武,白国良,乔庆文.HEAVY ION RESEARCH FACILITY AT LANZHOU (HIRFL)[J].Chinese Science Bulletin,1989,34(13):1057-1060.
-
3LIN ChengJian1, XU XinXing1, JIA HuiMing1, YANG Feng1, JIA Fei1, WU ZhenDong1, ZHANG ShiTao1, LIU ZuHua1, ZHANG HuanQiao1, XU HuShan2, SUN ZhiYu2, WANG JianSong2, HU ZhengGuo2, WANG Meng2, CHEN RuoFu2, ZHANG XueYing2, LI Chen2, LEI XiangGuo2, XU ZhiGuo2, XIAO GuoQing2 & ZHAN WenLong2 1China Institute of Atomic Energy, P. O. Box 275(10), Beijing 102413, China,2 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.Experimental research into the two-proton emissions from ^(17,18) Ne,^(28) P and ^(28,29)S[J].Science China(Physics,Mechanics & Astronomy),2011,54(S1):73-80. 被引量：4
-
4李斌.计算机原子研究中心[J].管理观察,1999,0(3):54-54.
-
5张世昌.MADEY THEOREM AND GAIN FORMULA IN ELECTRON CYCLOTRON MASER[J].Chinese Science Bulletin,1990,35(1):14-18.
-
6科海拾零[J].中国科教创新导刊,1997(7):30-31.
-
7俞鸿儒.Use of thermal separator to create cryogenic test flow[J].Progress in Natural Science:Materials International,1998,8(2):102-106.
-
8LIU WeiPing, LI ZhiHong, BAI XiXiang, WANG YouBao, GUO Bing, PENG ChaoHua, YANG Yi, SU Jun, CUI BaoQun, ZHOU ShuHua, ZHU ShengYun, XIA HaiHong, GUAN XiaLing, ZENG Sheng, ZHANG HuanQiao, CHEN YongShou, TANG HongQing, HUANG Li & FENG BeiYuan China Institute of Atomic Energy, P. O. Box 275(1), Beijing 102413, China.BRIF and CARIF progress[J].Science China(Physics,Mechanics & Astronomy),2011,54(S1):14-17. 被引量：8
-
9WANG ZhengJiang1, WANG Jian1, DUAN TaiZhong2, XIE Yuan1, ZHUO JieWen1,3 & YANG Ping1 1 Chengdu Institute of Geology and Mineral Resources, Ministry of Land and Resources, Chengdu 610082, China,2 Marathon Oil UK Ltd., Aberdeen, Scotland, AB15 6FZ, UK,3 Graduate Department, Chinese Academy of Geological Sciences, Beijing 100037, China.Geochronology of middle Neoproterozoic volcanic deposits in Yangtze Craton interior of South China and its implications to tectonic settings[J].Science China Earth Sciences,2010,53(9):1307-1315. 被引量：20
-
10XU YiJun.Based on the ISM model embedded geriatric rehabilitation nursing facility development restriction factor analysis[J].International English Education Research,2015(12):62-64.
