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

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.60.031304· OSTI ID:6271644

Seweryniak, D; Uusitalo, J; Carpenter, M P; Nisius, D; Davids, C N; Brown, L T; Henderson, D J; Janssens, R V ^[1]; Seweryniak, D; Conticchio, L; Walters, W B ^[2]; Bingham, C R; Wauters, J ^[3]; Woods, P J ^[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)

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]

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• OSTI ID: 6271644
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Vol. 60:3; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663210* -- Ground-State Radioactivity-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOTOPES
KRYPTON 78 TARGET
KRYPTON 80 TARGET
MERCURY ISOTOPES
MILLISEC LIVING RADIOISOTOPES
NEUTRONS
NUCLEAR DECAY
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
RADIOISOTOPES
RUBIDIUM 96
RUBIDIUM ISOTOPES
TARGETS
YEARS LIVING RADIOISOTOPES