Die Faktoren der inneren Umwandlung beim35Br80m (4,4 Std)

Abstract

The intensities of the 37keV-and 49keV-y-rays of ]3r 8~ have been measured with the aid of NaJ-scintillation spectrometers and compared with the intensity of the conversion electrons registered by an anthracene split crystal spectrometer. It was possible to separate the 49 keV-y-radiation from the intense 37 keV-line by selctive absorption with balanced Sin-and Gd-filters. The internal conversion coefficients (49 keV) = 298-b 30 and g (37 keV) = 1,59 :k 0, t0 are in good agreement with the calculated values for M3-and El-transitions. The half life was measured yielding a value of ~ = (4,40 :k 0,05) h.

In-beam study of excited states in80Br

“…The properties of the positive-parity states point to a decrease of the effective nuclear deformation with increasing neutron number similarly as deduced for the doubly-even Kr nuclei [11]. In order to study the properties of the (7~g9/2, Pg9/2) multiplet for higher neutron numbers we initialized an in-beam investigation of the doubly-odd nucleus 8~ Low-spin states (I_<__ 5) of S~ have previously been investigated via the radioactive decay of the 5-isomer at 85.84 keV [12], in neutron transfer reactions of the type (d,p) [13] and (p, d) [14], in the (p, n) charge exchange reaction [15], in the (p, n7) reaction [16] and in the thermal neutron capture reaction [17]. As a result of the (n, 7) study a very complex level scheme has been proposed including 18 levels below an excitation energy of 500 keV.…”

Study of the level structures of80Br and82Br using the thermal neutron capture reaction

“…They are well known, and spin and parity J'=2-and J==5-were assigned respectively [35,36]. The 37keV level was observed in the decay of 8~ [26], the (p, n) reaction and the (n, ?)…”

Chemically significant details of some nuclear reactions

“…With reference to the isomeric transition studies, however, it must be pointed out that the decay of 80mBr to 80Br proceeds through the 37-keV level which, although it is reported to be an Ex transition, has a half-life of 7.4 nsec. 26 The internal conversion coefficients of the 0.049-MeV and 0.037-MeV transitions are ca. 300 and 1.6, respectively (Figure 3).…”