Analysis of odd-mass technetium isotopes with the Alaga model

Abstract

The structure of the odd-mass technetium isotopes is analyzed with the Alaga model which involves the coupling of a three-particle valence-shell cluster to the quadrupole vibrational field. The calculated energy-level sequence and decay properties are consistent with the general trend of the available experimental information although no attempt of the best fit to individual properties was pursued.

A unified model calculation of states in odd-mass technetium isotopes

“…However, this does not seem to lower the energy of the first 5/2 + level sufficiently and in Table l of [4] it is stated that the probability to find one of the cluster particles in the ds/2 state is small in all of the lowlying levels. Inclusion of the g7/2 state, which is expected close to the ds/2 state in energy, will probably not change things a great deal.…”

Gamma-gamma angular correlation studies in97Tc

“…Calculations of similar nature have also been performed by Abecasis et al [13]. Figure4 shows a comparison between the experimental level scheme [12] compared with the experimental level scheme [1] and that obtained in a model where a valence cluster described as 0.74(rcg9/2) 3 +0.26(rcg9/@ (the numbers correspond to probabilities) is coupled to the quadrupole oscillations of the core.…”

Discovery, nuclear properties, synthesis and applications of technetium-101

“…Most literature using liquid–liquid extraction for isolating 101 Tc reported employing CHCl 3 as an organic solvent in conjunction with bulky coordinating cations, such as [(C 6 H 5 ) 4 As] + and [C 25 H 46 N] + , for removing the corresponding [TcO 4 ]-salt from a caustic aqueous solution 50 , 51 . For example, while exploiting the varying chemistries between Ru/Rh and Tc, Gray et al were able to perform quick separations on the order of ~12 min to isolate 101 Tc from the corresponding target material.…”