Chinese Physics C > 1995, Vol. 19 > Issue(S2): 109-114

First Observation ofβ-delayed Proton Decay of Proton Drip Line Nuclide¹⁹Na

1 Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China;
2 Institute of High-energy Physics, The Chinese Academy of Sciences, Beijing, China

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Abstract：
The nuclide on proton drip line ¹⁹Na was studied through a ²⁰Ne(p,2n) ¹⁹Na reaction. Its new decay mode of β-delayed proton decay was observed for the first time. The proton energy was measured to be 1.10±0.08 MeV and its half-life was determined to be 47±20 ms, which corresponds to a superallowed β transition of ^l9Na ground state to ¹⁹Ne 7.62 MeV isospin analog state with T=3/2, and subsequent proton emission to ^{an 18}F ground state.
- proton decay,
- β-delayed decay,
- precursor,
- drip line nuclei

[1]	Angel Abusleme,Thomas Adam,Shakeel Ahmad,Rizwan Ahmed,Sebastiano Aiello,Muhammad Akram,Fengpeng An,Qi An,Giuseppe Andronico,Nikolay Anfimov,Vito Antonelli,Tatiana Antoshkina,Burin Asavapibhop,João Pedro Athayde Marcondes de André,Didier Auguste,Nikita Balashov,Wander Baldini,Andrea Barresi,Davide Basilico,Eric Baussan,Marco Bellato,Antonio Bergnoli,Thilo Birkenfeld,Sylvie Blin,David Blum,Simon Blyth,Anastasia Bolshakova,Mathieu Bongrand,Clément Bordereau,Dominique Breton,Augusto Brigatti,Riccardo Brugnera,Riccardo Bruno,Antonio Budano,Mario Buscemi,Jose Busto,Ilya Butorov,Anatael Cabrera,Barbara Caccianiga,Hao Cai,Xiao Cai,Yanke Cai,Zhiyan Cai,Riccardo Callegari,Antonio Cammi,Agustin Campeny,Chuanya Cao,Guofu Cao,Jun Cao,Rossella Caruso,Cédric Cerna,Jinfan Chang,Yun Chang,Pingping Chen,Po-An Chen,Shaomin Chen,Xurong Chen,Yi-Wen Chen,Yixue Chen,Yu Chen,Zhang Chen,Jie Cheng,Yaping Cheng,Alexey Chetverikov,Davide Chiesa,Pietro Chimenti,Artem Chukanov,Gérard Claverie,Catia Clementi,Barbara Clerbaux,Selma Conforti Di Lorenzo,Daniele Corti,Flavio Dal Corso,Olivia Dalager,Christophe De La Taille,Zhi Deng,Ziyan Deng,Wilfried Depnering,Marco Diaz,Xuefeng Ding,Yayun Ding,Bayu Dirgantara,Sergey Dmitrievsky,Tadeas Dohnal,Dmitry Dolzhikov,Georgy Donchenko,Jianmeng Dong,Evgeny Doroshkevich,Marcos Dracos,Frédéric Druillole,Ran Du,Shuxian Du,Stefano Dusini,Martin Dvorak,Timo Enqvist,Heike Enzmann,Andrea Fabbri,Ulrike Fahrendholz,Donghua Fan,Lei Fan,Jian Fang,Wenxing Fang,Marco Fargetta,Dmitry Fedoseev,Li-Cheng Feng,Qichun Feng,Richard Ford,Amélie Fournier,Haonan Gan,Feng Gao,Alberto Garfagnini,Arsenii Gavrikov,Marco Giammarchi,Agnese Giaz,Nunzio Giudice,Maxim Gonchar,Guanghua Gong,Hui Gong,Yuri Gornushkin,Alexandre Göttel,Marco Grassi,Christian Grewing,Vasily Gromov,Minghao Gu,Xiaofei Gu,Yu Gu,Mengyun Guan,Nunzio Guardone,Maria Gul,Cong Guo,Jingyuan Guo,Wanlei Guo,Xinheng Guo,Yuhang Guo,Paul Hackspacher,Caren Hagner,Ran Han,Yang Han,Muhammad Sohaib Hassan,Miao He,Wei He,Tobias Heinz,Patrick Hellmuth,Yuekun Heng,Rafael Herrera,YuenKeung Hor,Shaojing Hou,Yee Hsiung,Bei-Zhen Hu,Hang Hu,Jianrun Hu,Jun Hu,Shouyang Hu,Tao Hu,Yuxiang Hu,Zhuojun Hu,Chunhao Huang,Guihong Huang,Hanxiong Huang,Wenhao Huang,Xin Huang,Xingtao Huang,Yongbo Huang,Jiaqi Hui,Lei Huo,Wenju Huo,Cédric Huss,Safeer Hussain,Ara Ioannisian,Roberto Isocrate,Beatrice Jelmini,Kuo-Lun Jen,Ignacio Jeria,Xiaolu Ji,Xingzhao Ji,Huihui Jia,Junji Jia,Siyu Jian,Di Jiang,Wei Jiang,Xiaoshan Jiang,Ruyi Jin,Xiaoping Jing,Cécile Jollet,Jari Joutsenvaara,Sirichok Jungthawan,Leonidas Kalousis,Philipp Kampmann,Li Kang,Rebin Karaparambil,Narine Kazarian,Amina Khatun,Khanchai Khosonthongkee,Denis Korablev,Konstantin Kouzakov,Alexey Krasnoperov,Andre Kruth,Nikolay Kutovskiy,Pasi Kuusiniemi,Tobias Lachenmaier,Cecilia Landini,Sébastien Leblanc,Victor Lebrin,Frederic Lefevre,Ruiting Lei,Rupert Leitner,Jason Leung,Demin Li,Fei Li,Fule Li,Gaosong Li,Haitao Li,Huiling Li,Jiaqi Li,Mengzhao Li,Min Li,Nan Li,Nan Li,Qingjiang Li,Ruhui Li,Shanfeng Li,Tao Li,Weidong Li,Weiguo Li,Xiaomei Li,Xiaonan Li,Xinglong Li,Yi Li,Yichen Li,Yufeng Li,Zhaohan Li,Zhibing Li,Ziyuan Li,Hao Liang,Hao Liang,Jiajun Liao,Daniel Liebau,Ayut Limphirat,Sukit Limpijumnong,Guey-Lin Lin,Shengxin Lin,Tao Lin,Jiajie Ling,Ivano Lippi,Fang Liu,Haidong Liu,Hongbang Liu,Hongjuan Liu,Hongtao Liu,Hui Liu,Jianglai Liu,Jinchang Liu,Min Liu,Qian Liu,Qin Liu,Runxuan Liu,Shuangyu Liu,Shubin Liu,Shulin Liu,Xiaowei Liu,Xiwen Liu,Yan Liu,Yunzhe Liu,Alexey Lokhov,Paolo Lombardi,Claudio Lombardo,Kai Loo,Chuan Lu,Haoqi Lu,Jingbin Lu,Junguang Lu,Shuxiang Lu,Xiaoxu Lu,Bayarto Lubsandorzhiev,Sultim Lubsandorzhiev,Livia Ludhova,Arslan Lukanov,Fengjiao Luo,Guang Luo,Pengwei Luo,Shu Luo,Wuming Luo,Vladimir Lyashuk,Bangzheng Ma,Qiumei Ma,Si Ma,Xiaoyan Ma,Xubo Ma,Jihane Maalmi,Yury Malyshkin,Roberto Carlos Mandujano,Fabio Mantovani,Francesco Manzali,Xin Mao,Yajun Mao,Stefano M. 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Xu Xiaoji, Ma Ruichang, Huang Wenxue, Hu Zhiqiang, Gu Junsheng, Guo Yingxiang, Xu Lianlian, Liu Hongye, Luo Yixiao, Wang Shuhong, Kong Dengming and Qiao Jimin. First Observation of β-delayed Proton Decay of Proton Drip Line Nuclide ¹⁹Na[J]. Chinese Physics C, 1995, 19(S2): 109-114.

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Received: 1994-11-24

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Supported by the National Natural Science Foundation of China.

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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

First Observation ofβ-delayed Proton Decay of Proton Drip Line Nuclide¹⁹Na

1 Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China;
2 Institute of High-energy Physics, The Chinese Academy of Sciences, Beijing, China

Received Date:1994-11-24

Fund Project:Supported by the National Natural Science Foundation of China.

Abstract:The nuclide on proton drip line¹⁹Na was studied through a²⁰Ne(p,2n)¹⁹Na reaction. Its new decay mode ofβ-delayed proton decay was observed for the first time. The proton energy was measured to be 1.10±0.08 MeV and its half-life was determined to be 47±20 ms, which corresponds to a superallowed β transition of^l9Na ground state to¹⁹Ne 7.62 MeV isospin analog state withT=3/2, and subsequent proton emission to^{an 18}F ground state.