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Title: Decay properties of the new isotopes [sup 172]Hg and [sup 173]Hg

Abstract

The [alpha] decays of the two neutron-deficient nuclei [sup 172]Hg and [sup 173]Hg were observed for the first time using the [sup 78]Kr([sup 96]Ru,2n) and [sup 80]Kr([sup 96]Ru,3n) reactions, respectively. The reaction products were dispersed according to their mass-to-charge state ratios in the Argonne Fragment Mass Analyzer and implanted in a double-sided silicon strip detector, where their subsequent decays were studied using spatial and time correlations between implants and decays. A half-life of 250([sub [minus]90][sup +350]) [mu]s and an energy of 7350(12) keV were deduced for the [alpha] decay of [sup 172]Hg. In [sup 173]Hg the half-life was measured to be 0.93([sub [minus]0.26][sup +0.57]) ms and the corresponding energy is 7211(11) keV. In addition, the half-life and energy of the [alpha] decay of [sup 174]Hg were measured more precisely. The reduced widths deduced for these Hg isotopes indicate that the observed decays correspond to unhindered [Delta]l=0 transitions. The [alpha]-decay [ital Q] values are compared with the values calculated using mass tables by M[umlt o]ller and Nix, and by Liran and Zeldes. The latter mass tables show better agreement with the data. [copyright] [ital 1999] [ital The American Physical Society]

Authors:
; ; ; ; ; ; ;  [1]; ; ;  [2]; ;  [3];  [4]
  1. (Argonne National Laboratory, Argonne, Illinois 60439 (United States))
  2. (University of Maryland, College Park, Maryland 20742 (United States))
  3. (University of Tennessee, Knoxville, Tennessee 37996 (United States))
  4. (University of Edinburgh, Edinburgh (United Kingdom))
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
6271644
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 60:3; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; HALF-LIFE; KRYPTON 78 TARGET; KRYPTON 80 TARGET; MERCURY ISOTOPES; NEUTRONS; RUBIDIUM 96; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DECAY; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MILLISEC LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; NUCLEONS; ODD-ODD NUCLEI; RADIOISOTOPES; RUBIDIUM ISOTOPES; TARGETS; YEARS LIVING RADIOISOTOPES; 663210* - Ground-State Radioactivity- (1992-)

Citation Formats

Seweryniak, D., Uusitalo, J., Carpenter, M.P., Nisius, D., Davids, C.N., Brown, L.T., Henderson, D.J., Janssens, R.V., Seweryniak, D., Conticchio, L., Walters, W.B., Bingham, C.R., Wauters, J., and Woods, P.J. Decay properties of the new isotopes [sup 172]Hg and [sup 173]Hg. United States: N. p., 1999. Web. doi:10.1103/PhysRevC.60.031304.
Seweryniak, D., Uusitalo, J., Carpenter, M.P., Nisius, D., Davids, C.N., Brown, L.T., Henderson, D.J., Janssens, R.V., Seweryniak, D., Conticchio, L., Walters, W.B., Bingham, C.R., Wauters, J., & Woods, P.J. Decay properties of the new isotopes [sup 172]Hg and [sup 173]Hg. United States. doi:10.1103/PhysRevC.60.031304.
Seweryniak, D., Uusitalo, J., Carpenter, M.P., Nisius, D., Davids, C.N., Brown, L.T., Henderson, D.J., Janssens, R.V., Seweryniak, D., Conticchio, L., Walters, W.B., Bingham, C.R., Wauters, J., and Woods, P.J. Wed . "Decay properties of the new isotopes [sup 172]Hg and [sup 173]Hg". United States. doi:10.1103/PhysRevC.60.031304.
@article{osti_6271644,
title = {Decay properties of the new isotopes [sup 172]Hg and [sup 173]Hg},
author = {Seweryniak, D. and Uusitalo, J. and Carpenter, M.P. and Nisius, D. and Davids, C.N. and Brown, L.T. and Henderson, D.J. and Janssens, R.V. and Seweryniak, D. and Conticchio, L. and Walters, W.B. and Bingham, C.R. and Wauters, J. and Woods, P.J.},
abstractNote = {The [alpha] decays of the two neutron-deficient nuclei [sup 172]Hg and [sup 173]Hg were observed for the first time using the [sup 78]Kr([sup 96]Ru,2n) and [sup 80]Kr([sup 96]Ru,3n) reactions, respectively. The reaction products were dispersed according to their mass-to-charge state ratios in the Argonne Fragment Mass Analyzer and implanted in a double-sided silicon strip detector, where their subsequent decays were studied using spatial and time correlations between implants and decays. A half-life of 250([sub [minus]90][sup +350]) [mu]s and an energy of 7350(12) keV were deduced for the [alpha] decay of [sup 172]Hg. In [sup 173]Hg the half-life was measured to be 0.93([sub [minus]0.26][sup +0.57]) ms and the corresponding energy is 7211(11) keV. In addition, the half-life and energy of the [alpha] decay of [sup 174]Hg were measured more precisely. The reduced widths deduced for these Hg isotopes indicate that the observed decays correspond to unhindered [Delta]l=0 transitions. The [alpha]-decay [ital Q] values are compared with the values calculated using mass tables by M[umlt o]ller and Nix, and by Liran and Zeldes. The latter mass tables show better agreement with the data. [copyright] [ital 1999] [ital The American Physical Society]},
doi = {10.1103/PhysRevC.60.031304},
journal = {Physical Review, C},
issn = {0556-2813},
number = ,
volume = 60:3,
place = {United States},
year = {1999},
month = {9}
}