Observation of Beta-Delayed Proton Decay of <SUP>69</SUP>Kr

Xu Xiaoji; Huang Wenxue; Ma Ruichang; Gu Zhongdao; Yang Yongfeng; Wang Yanyu; Dong Chengfu

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1997, Vol. 21> Issue(3) : 286-288

Observation of Beta-Delayed Proton Decay of ⁶⁹Kr

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000

Abstract
HTML
Reference
Related

PDF

Abstract：
A new group of protons at a laboratory energy of (4.07±0.05) MeV with half-life of (32±10)ms was discovered via observing the decay proton spectrum resulting from ³²S+Ca reaction.By reaction channel analyses and comparing with theoretical prediction,this new proton radioactivity was assigned to arising from the beta-delayed proton decay of ⁶⁹Kr produced in the ⁴⁰Ca(³²S,3n) reaction,corresponding to decay of the T=3/2 isobaric analog state in ⁶⁹Br to the ground state of ⁶⁸Se.Combining this measurement with Coulomb displacement energy calculation yields a mass excess for ⁶⁹Kr of (－32.15±0.30)MeV. The partial decay scheme of ⁶⁹Kr was proposed.

References

[1]

J. C. Batchelder, D. M. Moltz, T. J. Ognibene et al., Phys. Rev., C47(1993)2038.[2] B. Blank, S. Andriamonje, S. Czajkowski et al., Phys. Rev. Lett, 74(1995)4611.[3] R. G. Sextro, R. A. Gough, J. Cerny, Nucl. Phys., A234(1974) 130.[4] Takayoshi Horiguchi, Takahiro Tachibana, Tsutomu Tamura, Chart of The Nuclides 1992.

[1]	Dong-Hong Zhang , Feng-Shou Zhang . Fragment distribution in ^78,86Kr+¹⁸¹Ta reactions. Chinese Physics C, 2018, 42(5): 054107. doi: 10.1088/1674-1137/42/5/054107
[2]	Wei Zhang , Yi-Fei Niu . Shape evolution of ^{72, 74}Kr with temperature in covariant density functional theory. Chinese Physics C, 2017, 41(9): 094102. doi: 10.1088/1674-1137/41/9/094102
[3]	Hong-Bo Bai , Xiao-Wei Li , Li-Jun Lü , Hong-Fei Dong , Yin Wang , Jin-Fu Zhang . Spectra and electromagnetic transitions of ^72-84Kr in the interacting boson model-1. Chinese Physics C, 2016, 40(7): 074103. doi: 10.1088/1674-1137/40/7/074103
[4]	J. -B. Bueb . Mass excess of ⁶⁹Br and the rp process. Chinese Physics C, 2015, 39(9): 094103. doi: 10.1088/1674-1137/39/9/094103
[5]	BAI Cai-Yan , ZHANG Dong-Hai . Study of compound particle production in ⁸⁴Kr-emulsion interactions at 1.7 A GeV. Chinese Physics C, 2011, 35(4): 349-354. doi: 10.1088/1674-1137/35/4/006
[6]	BAI Cai-Yan , ZHANG Dong-Hai . Projectile spectator proton production in ⁸⁴Kr- emulsion interactions at 1.7 A GeV. Chinese Physics C, 2011, 35(5): 436-440. doi: 10.1088/1674-1137/35/5/005
[7]	TIAN Hui-Xian , JIN Yun-Fan , ZHU Zhi-Yong , LIU Chang-Long , SUN You-Mei , WANG Zhi-Guang , LIU Jie , CHEN Xiao-Xi , WANG Yan-Bin , HOU Ming-Dong . Irradiation Effects in Polycarbonate Induced by 2.1GeV Kr Ions. Chinese Physics C, 2002, 26(4): 435-440.
[8]	YE Wei , SHEN WenQing . Effect of Deformation on Prescission Particle Emission in the Reaction of 10.6 MeV/u ⁸⁴Kr+²⁷Al. Chinese Physics C, 2000, 24(10): 945-948.
[9]	Pan Qiangyan , Luo Yixiao , De Poli , de Angelis . Band Crossings and Shape Changes in the K^π=5－/2 Band in ⁷⁹Kr. Chinese Physics C, 1998, 22(3): 209-216.
[10]	Huang Wenxue , Ma Ruichang , Xu Shuwei , Xu Xiaoji , Xie Yuanxiang , Li Zhankui , Ge Yuanxiu , Wang Yanyu , Wang Chunfang , Zhang Tianmei , Sun Xiangfu , Jin Genming , Luo Yixiao . β-Delayed Proton Emission Precursor ⁸⁷Mo. Chinese Physics C, 1998, 22(5): 385-387.
[11]	Xu Xiaoji , Huang Wenxue , Ma Ruichang , Gu Zhongdao , Yang Yongfeng , Wang Yanyu , Dong Chengfu . Observation of Beta-Delayed Proton Decay of⁶⁹Kr. Chinese Physics C, 1997, 21(S1): 443-446.
[12]	Xu Xiaoji , Ma Ruichang , Huang Wenxue , Hu Zhiqiang , Guo Junsheng , Guo Yingxiang , Xu Lianlian , Liu Hongye , Luo Yixiao , Wang Shuhong , Kong Dengming , Qiao Jimin . First Observation of β-delayed Proton Decay of the Proton Drip Line Nuclide ¹⁹Na. Chinese Physics C, 1995, 19(3): 203-208.
[13]	Xu Xiaoji , Hu Zhiqiang , Guo Junsheng , Ma Ruichang , Liu Hongye , Luo Yixiao , Zhang Yuzhao , Guo Tianrui , Huang Wenxue , Xu Lianlian . New Results of β-delayed α Decay of ²⁰Na. Chinese Physics C, 1994, 18(8): 680-686.
[14]	XU Xiao-Ji , GUO Jun-Sheng , HU Zhi-Qiang , ZHOU Xiao-Hong , MA Rui-Chang , LIU Hong-Ye , LI Gui-Sheng , DU Yi-Fei . A New Decay Channel Discovered in β-Delayed α Decay of ²⁰Na. Chinese Physics C, 1993, 17(7): 577-581.
[15]	XU Hu-Shan , JIANG Cheng-Lie , BAI Xi-Xiang . Preliminary Observation of Proton-rich Isotope ⁶⁵As. Chinese Physics C, 1992, 16(7): 647-650.
[16]	LI Yang-Guo . SPIN OBSERVABLE IN ANTIPROTON-NUCLEUS ELASTIC SCATTERINGS. Chinese Physics C, 1989, 13(6): 539-543.
[17]	GOU Liang , HUANG Tao . PROTON DECAY RATE AND THE PROTON WAVEFUNCTION. Chinese Physics C, 1984, 8(1): 45-51.
[18]	XU Xiao-Ji , GUO Jun-Sheng , GUO Ying-Xiang , ZHAO Zhi-Zheng , LUO Yi-Xiao . EXPERIMENTAL STUDY OF BETA-DELAYED PROTON PRECURSORS ³³Ar AND ⁴⁹Fe. Chinese Physics C, 1984, 8(2): 244-247.
[19]	GOU Liang , HAO Chun . TWO-BODY DECAY OF THE PROTON. Chinese Physics C, 1983, 7(4): 437-442.
[20]	ZHAO ZHI-ZHENG , SUN XI-JUN . LIFETIME MEASUREMENTS OF EXCITED STATES IN ⁷⁶Kr. Chinese Physics C, 1982, 6(2): 255-260.

Access

Get Citation

Xu Xiaoji, Huang Wenxue, Ma Ruichang, Gu Zhongdao, Yang Yongfeng, Wang Yanyu and Dong Chengfu. Observation of Beta-Delayed Proton Decay of ⁶⁹Kr[J]. Chinese Physics C, 1997, 21(3): 286-288.

Xu Xiaoji, Huang Wenxue, Ma Ruichang, Gu Zhongdao, Yang Yongfeng, Wang Yanyu and Dong Chengfu. Observation of Beta-Delayed Proton Decay of ⁶⁹Kr[J]. Chinese Physics C, 1997, 21(3): 286-288. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(3661)
PDF Downloads(573)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Observation of Beta-Delayed Proton Decay of ⁶⁹Kr

Corresponding author: Xu Xiaoji,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-03-05

Abstract: A new group of protons at a laboratory energy of (4.07±0.05) MeV with half-life of (32±10)ms was discovered via observing the decay proton spectrum resulting from ³²S+Ca reaction.By reaction channel analyses and comparing with theoretical prediction,this new proton radioactivity was assigned to arising from the beta-delayed proton decay of ⁶⁹Kr produced in the ⁴⁰Ca(³²S,3n) reaction,corresponding to decay of the T=3/2 isobaric analog state in ⁶⁹Br to the ground state of ⁶⁸Se.Combining this measurement with Coulomb displacement energy calculation yields a mass excess for ⁶⁹Kr of (－32.15±0.30)MeV. The partial decay scheme of ⁶⁹Kr was proposed.