Alpha decay of neutron-deficient isotopes with 52 ≦ Z ≦ 55, including the new isotopes (T = 60 ) and 110Xe

γ-ray spectroscopy of the odd-oddN=Z+2deformed proton emitter112Cs

“…If this is indeed a second proton decay in 112 Cs, then the energy difference between this decay and the known 112 Cs proton decay is 100 keV. This is interesting since the daughter nucleus 111 54 Xe is known to decay by two alpha-decay branches with an energy difference close to 100 keV [7,8] [31] and its fine structure [32] have given information about the first excited state in 101 Sn. However, with the low numbers of counts and large uncertainties in the present work, it is not possible to draw any definite conclusion about the states in 111 Xe.…”

“…Proton and alpha decay of nuclei in the neutron-deficient A = 110 region was first observed over 25 years ago [7][8][9]. There is now a well-established island of alpha-particle-and proton-emitting nuclei in this region.…”

Evidence for the alpha decay of108I

“…The observation of this latter decay would supersede the current closest confirmed approach to x~176 the observation of the alpha decay of l~ leading to the nuclide ~~ The predictions of Wapstra et al which are expected to be reliable away from stability [10] do not extend sufficiently far out to provide an estimate of the alpha decay Q-value of ~~ However alpha decay Q-values predicted by the droplet model of Myers [13] for isotopes in this region are found to be in good overall agreement with measured values, having a standard deviation of about 200keV [14]. The corresponding Q-value predicted by Myers for t~ alpha decay is 4.58 MeV which would suggest a half life of ~ 6 gs for an unhindered l=0 decay, assuming a reduced width equal to that measured for the alpha decay of l~ [14]. This short anticipated half life combined with the very low cross section expected for the 3 n channel require that a fast and efficient separation device such as the RMS be used if this decay line is to be observed.…”

Discovery of palladium, antimony, tellurium, iodine, and xenon isotopes

“…The isotopes were analyzed with the A1900 projectile fragment separator and identified event-by-event with measurements of the magnetic rigidity, time of flight, energy-loss, and total energy. "A number of new nuclides were identified including 88 Ru, 90,91,92,93 Rh, 92, 93 Pd, and 94,95 Ag." 94 …”