Abstract
The neutron-deficient 115Cs was produced at ISOLDE, CERN by spallation reaction using 1.4 GeV proton on LaC2 target. The exotic decay modes were studied by using a charged particle array (DSSD and pad detectors) and a γ-detector array (four Clovers) at the ISOLDE decay station (IDS). In this report, results on observed β-delayed particle emission from 115Cs, a nucleus close to proton drip line, is presented. By measuring the time distribution in the delayed proton spectrum, the half-life of the ground state of 115Cs was extracted. The obtained half-life is in agreement with previous reported value. For the first time, the p-unbound states of 115Xe, obtained by measuring beta-delayed protons from 115Cs is reported.
Highlights
The study of properties of nuclei near and beyond the drip lines provides unique information on n-n interaction that is important in understanding the limits of existence of the quantum many body systems i.e. atomic nuclei [1]
At ISOLDE decay station (IDS), a compact particle detection system consisting of four DSSDs (Double Sided Silicon Strip Detectors), stacked in telescope configuration with 4 PAD detectors
Where as the alpha spectrum can be obtained from the energy loss spectrum in the thin DSSD in anti-coincidence mode with consecutive PAD detector
Summary
The study of properties of nuclei near and beyond the drip lines provides unique information on n-n interaction that is important in understanding the limits of existence of the quantum many body systems i.e. atomic nuclei [1]. At IDS, a compact particle detection system consisting of four DSSDs (Double Sided Silicon Strip Detectors), stacked in telescope configuration with 4 PAD detectors. The thin DSSDs (65 and 67 μm) are insensitive to β radiation but they stop low energy protons, alphas etc.
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