Decay measurements of 43K(β -)43Ca by HRS and TAS

Abstract

In this work, decay spectroscopy of neutron-rich 43K has been performed at the Radioactive Ion Beam (RIB) facility at Variable Energy Cyclotron Centre (VECC), Kolkata by producing it with an 18-MeV alpha beam on 40Ar gas target. The beam was delivered from the K130 Cyclotron and the gas jet recoil transport system was used to move the products to a low-background site. The β-feeding intensities were measured by both high resolution -ray spectroscopy and total absorption ? -ray spectroscopy methods in order to address mainly the anomalies (if any) in the feeding to ΔJ = 1 levels reported earlier. The decay half-life of 43K was also measured to be 22.4(1) hrs.