Internal bremsstrahlung accompanying non-unique second-forbidden β-decay of 36Cl

Internal Bremsstrahlung accompanying non-unique second-forbidden?-decay of36CL

“…The /?-transition was characterized by Aj = 2, A ~z = 0 and log ft = 13.3, which is classified as nonunique second forbidden/?-transition [26]. It also decays to the ground state of 36S by an electron capture (Ec) with a branching ratio of 1.9% and an end point energy of 1135 KeV [25][26][27]. For Ec transition one can find that AJ=2, A re=0 and log ft= 13.58 [27].…”

“…Their experimental data in the energy interval 80 to 700 KeV were compared with the theoretical spectra of KUB [1,2], LF [5], and of Chang and Falkoff [3]. The authors [25] suggested that, it would be interesting to see the comparison of the results with a theory developed for secondforbidden transitions with different types of fl-interactions including the detour transions [6,23,24].…”

“…spectrum accompanying the non-unique second forbidden beta-decay of 36C1 was measured before by P. Venkataramiah [25] using the magnetic deflection technique. The true I.B.…”

Internal Bremsstrahlung from14C and36Cl

“…As regards the IB from 36C1, the available literature reveals that there was only one measurement [-3] of IB from 36C1 and in this case the experimentally measured values of IB were found to be in excess over the KUB theory [-4] and tend to be close to the second forbidden spectrum of Chang and Falkoff [5]. As it seems to be the only earlier measurement [3] of IB from 36C1, it is felt essential to measure the IB from 36C1 for another time to confirm the validity or otherwise of the above reported results.…”

“…In the literature there has been found only one earlier measurement, that to a single counter measurement due to Venkata Ramaiah et al [3] employing a NaI(T1) detector. In the photon energy region from 80 keV to 400 keV common to both investigations in the present IB results are larger than those of Venkata Ramaiah et al [3].…”