β-delayed proton decay of the proton drip-line nucleus <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>142</mn></mrow></msup></mrow><mi mathvariant="normal">Ho</mi></math></span>

S.-W. Xu; Z.-K. Li; Y.-X. Xie; X.-D. Wang; B. Guo; C.-G. Leng; Y. Yu; C.-F. Wang; J.-P. Xing; H.-Y. Chen; T.-M. Zhang

doi:10.1103/PhysRevC.64.017301

β-delayed proton decay of the proton drip-line nucleus $^{142} Ho$

S.-W. Xu, Z.-K. Li, Y.-X. Xie, X.-D. Wang, B. Guo, C.-G. Leng, Y. Yu, C.-F. Wang, J.-P. Xing, H.-Y. Chen, and T.-M. Zhang

Phys. Rev. C 64, 017301 – Published 30 May 2001

Abstract

Unknown β-delayed proton precursor $^{142} Ho$ was synthesized in the reaction $^{106} Cd$ $(^{40} Ca, p 3 n)$ and identified for the first time using proton-gamma coincidence measurements in combination with a helium-jet fast tape-transport system. Its β-delayed proton spectrum was observed. The half-life of $^{142} Ho$ was determined to be $0.4 \pm 0.1 s .$ According to the estimated relative branching ratios to the final states in the daughter nucleus, the ground-state spin of $^{142} Ho$ could be assigned as 6, 7, or 8.

Received 12 December 2000

DOI:https://doi.org/10.1103/PhysRevC.64.017301

Authors & Affiliations

S.-W. Xu^*, Z.-K. Li, Y.-X. Xie, X.-D. Wang, B. Guo, C.-G. Leng, Y. Yu, C.-F. Wang, J.-P. Xing, H.-Y. Chen, and T.-M. Zhang

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China

^*FAX: 86-931-8272100. Email address: xsw@ns.lzb.ac.cn

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Vol. 64, Iss. 1 — July 2001

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Physical Review C

covering nuclear physics