Nuclear Data Sheets Update for A = 95

doi:10.1006/ndsh.1993.1015

Nuclear Data Sheets

Volume 68, Issue 3, March 1993, Pages 635-746

https://doi.org/10.1006/ndsh.1993.1015 Get rights and content

Abstract

The 1983 evaluation of A = 95 (83Lu03) has been updated using experimental decay and reaction data received by February 3, 1993.

References (0)

Cited by (40)

Decay chains and photofission investigation based on nuclear spectroscopy of highly enriched uranium sample
2013, Applied Radiation and Isotopes
Nuclear spectroscopy experiments were performed for 100 g metallic uranium rod enriched to 93% ²³⁵U, in order to establish and characterize the most prominent $γ$ -rays in the natural decay series and photofission reaction. Single $γ$ -ray spectra and $γ$ – $γ$ coincidences measurements were conducted before irradiation. The uranium sample was subsequently irradiated with 15 MeV bremsstrahlung photons. Relative intensities of $γ$ -lines and several values of half-lives of the fission fragments decays were determined. The obtained information can be utilized in detection of smuggled nuclear materials and characterization of bulky nuclear waste packages.
Fission Product Yields of 233U, 235U, 238U and 239Pu in Fields of Thermal Neutrons, Fission Neutrons and 14.7-MeV Neutrons
2010, Nuclear Data Sheets
The yields of more than fifteen fission products have been carefully measured using radiochemical techniques, for ²³⁵U(n,f), ²³⁹Pu(n,f) in a thermal spectrum, for ²³³U(n,f), ²³⁵U(n,f), and ²³⁹Pu(n,f) reactions in a fission neutron spectrum, and for ²³³U(n,f), ²³⁵U(n,f), ²³⁸U(n,f), and ²³⁹Pu(n,f) for 14.7 MeV monoenergetic neutrons. Irradiations were performed at the EL3 reactor, at the Caliban and Prospero critical assemblies, and at the Lancelot electrostatic accelerator in CEA-Valduc. Fissions were counted in thin deposits using fission ionization chambers. The number of fission products of each species were measured by gamma spectrometry of co-located thick deposits.
MQPM description of the structure and beta decays of the odd A=95,97 Mo and Tc isotopes
2010, Nuclear Physics A
The odd-mass isotopes $A = 95, 97$ of molybdenum are of interest for neutrino-physics applications. The microscopic quasiparticle-phonon model (MQPM) is used to calculate energy and decay characteristics of these nuclei and their beta-decay partners ( ${}^{95}{Tc}$ and ${}^{97}{Tc}$ ). A realistic single-particle valence space and two-body interaction are used in the calculations. The computed results are compared with available data. The obtained energy spectra are also compared with earlier calculations. We present the first ever calculations for the rates of allowed and forbidden $β^{+} / EC$ decay transitions in these nuclei. In general our computed numbers agree rather well with the available data.
Nuclear data sheets for A = 95
2010, Nuclear Data Sheets
Experimental data on ground and excited state properties for all known nuclei with mass number A=95 have been compiled and evaluated. States populated in radioactive decay, as well as in nuclear reactions, have been considered. For these nuclei, level and decay schemes, as well as tables of nuclear properties, are presented. This work supersedes the 1993 evaluation by T. W. Burrows (1993Bu08). In summary, three isomers were identified in ⁹⁵Ag and their respective decay schemes were presented (2003Do09) though only limits on their half lives could be obtained. Besides, high resolution prompt gamma-spectroscopy of ⁹⁵Ag has been reported for the first time (2003Ma24). A comprehensive level scheme ⁹⁵Pd is now available through the ε decay of ⁹⁵Ag (2005Ha45) and the energy of the 21/2+ spin-gap isomer have been established for the first time by observing the gamma-rays from the yrast levels (2003Ma24). The level scheme of ⁹⁵Rh has been extended up to 39/2 h by in-beam spectroscopy (1994Ro08) and the γ-delayed proton decays from ⁹⁶Ag isomers to low-lying levels in ⁹⁵Pd have been observed (2003Ba39). The high spin level scheme of ⁹⁵Ru has been extended up 43/2 h (1994Gh06) and the lifetime or lifetime limits of several high spin states have been reported (2004Ga08). In ⁹⁵Tc, the level scheme has been extended by in-beam spectroscopy (2000Gh01). New data on high spin states in ⁹⁵Mo have been available through in-beam spectroscopy using heavy ion reactions [(1998Kh04),(2004Ch18),(2009Zh11)]. The data on ⁹⁵Nb has been considerably extended by (t,p) reaction (2005Ra30) and by (⁸²Se,p2nγ) reaction (2005Bu08). In ⁹⁵Zr, new measurements on μ (2005St24) and Q (1998Se01) have become available. Controversy on the existence of a 23 keV state in ⁹⁵Zr has been resolved by a high-resolution measurement using magnetic spectrometer (2003So23). New data on high spin states have been published through heavy-ion induced fission [(2002Fo03), (2005Pa48)]. Very recently, new high spin data on ⁹⁵Y by n-induced and spontaneous fission decay have been available (2009Ur02). High spin data on ⁹⁵Sr have been reported by γ-spectroscopy of spontaneous fission decay (2004Hw04). In ⁹⁵Rb, revised estimate of γ-n decay intensity (2002Pf04) and mass excess (2007Ra23) have been reported. New data on ⁸⁵Kr it decay have been reported [(2006Ge05),(2007Si17)] and incorporated.
Measurements of activation cross-sections for the 96Ru(n,d*)95gTc reaction for neutrons with energies between 13.3 and 15.0 MeV
2008, Applied Radiation and Isotopes
In this study, activation cross-sections were measured for the ⁹⁶Ru(n,d*)^95gTc reaction at three different neutron energies from 13.5 to 14.8 MeV. The fast neutrons were produced via the ³H(d,n)⁴He reaction on a K-400 neutron generator. Induced gamma activities were measured by a high-resolution gamma-ray spectrometer with a high-purity germanium (HPGe) detector. Measurements were corrected for gamma-ray attenuations, random coincidence (pile-up), dead time and fluctuation of neutron flux. The data for ⁹⁶Ru(n,d*)^95gTc reaction cross-sections are reported to be 196±18, 253±22 and 298±22 mb at 13.5±0.2, 14.1±0.1 and 14.8±0.2 MeV incident neutron energies, respectively. Results were compared with the previous works.
Excitation functions of residues in the interaction of 12C with 103Rh up to an incident energy of 400 MeV
2005, Nuclear Physics A
The excitation functions for production of 45 residues in the interaction of ¹²C with ¹⁰³Rh at incident energies ranging from about 40 to 400 MeV are analysed in terms of many competing reaction mechanisms including complete and incomplete fusion reactions and the quite relevant contribution of the decay of the target nucleus excited in the inelastic scattering of the incident ¹²C ions. The cross-sections of most of these mechanisms have been obtained by extrapolation from the values measured in the interaction of ¹²C with the neighbouring nucleus ⁹³Nb. The agreement between experimental data and model predictions is very good in most cases.

View all citing articles on Scopus

View full text

Article preview

Nuclear Data Sheets

Abstract

References (0)

Cited by (40)

Decay chains and photofission investigation based on nuclear spectroscopy of highly enriched uranium sample

Fission Product Yields of <sup>233</sup>U, <sup>235</sup>U, <sup>238</sup>U and <sup>239</sup>Pu in Fields of Thermal Neutrons, Fission Neutrons and 14.7-MeV Neutrons

MQPM description of the structure and beta decays of the odd A=95,97 Mo and Tc isotopes

Nuclear data sheets for A = 95

Measurements of activation cross-sections for the <sup>96</sup>Ru(n,d*)<sup>95g</sup>Tc reaction for neutrons with energies between 13.3 and 15.0 MeV

Excitation functions of residues in the interaction of <sup>12</sup>C with <sup>103</sup>Rh up to an incident energy of 400 MeV

Revised A-ChainsNuclear Data Sheets Update for A = 95

Abstract

Revised A-Chains
Nuclear Data Sheets Update for A = 95