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Public Seminar of Physics RPg Student
posted by Department of Physics for HKU and Public
Event Type: Public Lecture/Forum/Seminar/Workshop/Conference/Symposium
Event Nature: Science & Technology

Event Details

Public Seminar of Physics RPg Student
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Beta-decay of 26P

Mr. Pengfei LIANG

Abstract:

The study of beta-delayed charged particle emission from proton-rich nuclei is a powerful tool to investigate the nuclear structure of the exotic nuclei. 26P has been identified as a beta-delayed one- and two-proton emitter in previous experiments[1,2]. It is important to carry out further experiment to investigate the mechanism of two-proton emission and search for beta-delayed alpha emission in 26P. An experiment of the beta-decay of 26P was therefore performed at the Radioactive Ion Beam Line in Lanzhou (RIBLL1). The radioactive ion beam 26P was produced by projectile fragmentation with a 32S16+ primary beam impinging on a 9Be target and then selected and purified with a Bρ-∆E-Bρ method. Protons, beta particles and gamma-ray were measured in coincidence using a silicon array and five clover-type HPGe detectors[3] to achieve the physical goals. The calibration of the detectors and the preliminary results of 26P including the gamma-ray spectrum, charged particle spectrum and half-life will be presented. Further analysis for the decay scheme, the angular correlation of the two-proton emission and the alpha emission property will be done later.

References:
[1] M. D. Cable, et al, Phys. Lett. B 123, 25 (1983).
[2] J. C. Thomas, et al. Eur. Phys. J. A 21, 419 (2004).
[3] L. J. Sun, et al, Nuclear Inst. and Methods in Physics Research A 804, 1 (2015).

Anyone interested is welcome to attend.

Date/Time18/07/2018 14:30-15:00
VenueRm 518, 5/F, Chong Yuet Ming Physics Building, HKU
LanguageEnglish

Registration Instruction

Registration is not required.

Contact Information

Should you have any enquiries, please feel free to contact Ms Eva Wong by email at physdept@hku.hk or by phone at 2859 2360 or by fax at 2559 9152.