Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: α decay of high- K isomers in Ds 270 and Hs 266 in a superfluid tunneling model

Abstract

Here, we use the superfluid tunneling model (STM) to calculate the half-lives of ground-state α decays of even-even superheavy nuclei (SHN) with Z ≥ 100 . The experimental data are reproduced to accuracies comparable to other contemporary models of α decay of SHN. We apply the STM to the case of the α decaying high-K isomers identified in the decay chains of 270Ds . By accounting for the α -decay Q values, Qα, the angular momentum difference between initial and final states, L, and a reduction in the pairing gap, Δ, we are able to reproduce the observed α decay of the isomers, including the unusual competition between L ≈ 10 and L ≈ 0 α branches seen for the K isomer in 270Ds ( Z = 110 ).

Authors:
 [1];  [2]
+ Show Author Affiliations
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
  2. Lund Univ. (Sweden). Dept. of Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Knut and Alice Wallenberg Foundation (KAW)
OSTI Identifier:
1430686
Alternate Identifier(s):
OSTI ID: 1422641
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Clark, R. M., and Rudolph, D.. α decay of high- K isomers in Ds270 and Hs266 in a superfluid tunneling model. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.024333.
Copy to clipboard
Clark, R. M., & Rudolph, D.. α decay of high- K isomers in Ds270 and Hs266 in a superfluid tunneling model. United States. https://doi.org/10.1103/PhysRevC.97.024333
Copy to clipboard
Clark, R. M., and Rudolph, D.. Thu . "α decay of high- K isomers in Ds270 and Hs266 in a superfluid tunneling model". United States. https://doi.org/10.1103/PhysRevC.97.024333. https://www.osti.gov/servlets/purl/1430686.
Copy to clipboard
@article{osti_1430686,
title = {α decay of high- K isomers in Ds270 and Hs266 in a superfluid tunneling model},
author = {Clark, R. M. and Rudolph, D.},
abstractNote = {Here, we use the superfluid tunneling model (STM) to calculate the half-lives of ground-state α decays of even-even superheavy nuclei (SHN) with Z ≥ 100 . The experimental data are reproduced to accuracies comparable to other contemporary models of α decay of SHN. We apply the STM to the case of the α decaying high-K isomers identified in the decay chains of 270Ds . By accounting for the α -decay Q values, Qα, the angular momentum difference between initial and final states, L, and a reduction in the pairing gap, Δ, we are able to reproduce the observed α decay of the isomers, including the unusual competition between L ≈ 10 and L ≈ 0 α branches seen for the K isomer in 270Ds ( Z = 110 ).},
doi = {10.1103/PhysRevC.97.024333},
journal = {Physical Review C},
number = 2,
volume = 97,
place = {United States},
year = {2018},
month = {2}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevC.97.024333
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

Figures / Tables:

Table 1 Table 1: Comparison between the decimal logarithms of the experimental and calculated ground-state-to-ground-state $α$-decay half-lives (in seconds) for all known even-even cases with $Z$≥100. The first column gives the nucleus of interest. The second column gives the Q value for the $α$ decay, ϱα (in MeV, with uncertainties typically lessmore » than 0.1% of the absolute value), either calculated using the AME2016 atomic mass evaluation tables of [26] or taken from [11]. The third column has the decimal logarithm of the experimental half-life taken from the evaluated nuclear data files [25] or from [11]. Generally, the experimental uncertainties in the half-lives are small enough to be ignored for the purposes of plots in Figures 1 and 2. The fourth, fifth, and sixth columns are the decimal logarithms of the $α$-decay half-lives calculated using the Superfluid Tunneling Model (T1/2,STM), the Viola-Seaborg formula [7] using the parameters in [8] (T1/2,VS), and the Royer formula [9] (T1/2,Royer), respectively.« less
All figures and tables (5 total)
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Large-amplitude motion in superfluid fermi droplets
journal, January 1990

LVII. The ranges of the α particles from various radioactive substances and a relation between range and period of transformation
journal, October 1911

  • Geiger, H.; Nuttall, J. M.
  • The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 22, Issue 130
  • DOI: 10.1080/14786441008637156

Microscopic theory of cluster radioactivity
journal, February 1998

Exotic radioactivity as a superfluid tunneling phenomenon
journal, February 1988

Calculation of the absolute lifetimes of the variety of decay modes of U 234
journal, May 1989

-Decay half-lives, -capture, and -nucleus potential
journal, November 2009

Wave Mechanics and Radioactive Disintegration
journal, September 1928

  • Gurney, Ronald W.; Condon, Edw. U.
  • Nature, Vol. 122, Issue 3073
  • DOI: 10.1038/122439a0

Analytic expressions for alpha-decay half-lives and potential barriers
journal, December 2010

Superheavy Elements – A Probe for Nuclear Matter at the Extremes
journal, January 2012

The AME2016 atomic mass evaluation (II). Tables, graphs and references
journal, March 2017

Configurations and hindered decays of K isomers in deformed nuclei with A > 100
journal, May 2015

  • Kondev, F. G.; Dracoulis, G. D.; Kibédi, T.
  • Atomic Data and Nuclear Data Tables, Vol. 103-104
  • DOI: 10.1016/j.adt.2015.01.001

The new isotope 270110 and its decay products 266Hs and 262Sg
journal, February 2001

  • Hofmann, S.; Heßberger, F. P.; Ackermann, D.
  • The European Physical Journal A, Vol. 10, Issue 1
  • DOI: 10.1007/s100500170137

Enhanced Stability of Superheavy Nuclei Due to High-Spin Isomerism
journal, June 2004

Superheavy nuclei from 48Ca-induced reactions
journal, December 2015

Alpha decay as a probe for the structure of neutron-deficient nuclei
journal, November 2016

Nuclear systematics of the heavy elements—II Lifetimes for alpha, beta and spontaneous fission decay
journal, March 1966

A Formulation of the Theory of Alpha-particle Decay from Time-independent Equations
journal, September 1954

Zur Quantentheorie des Atomkernes
journal, March 1928

α -decay calculations of heavy nuclei using an effective Skyrme interaction
journal, December 2013

Energy traps in atomic nuclei
journal, May 1999

  • Walker, Philip; Dracoulis, George
  • Nature, Vol. 399, Issue 6731
  • DOI: 10.1038/19911

Nuclear spectroscopy in nuclei with Z≥ 110
journal, December 2015

Effect of the reduced pairing interaction on α -decay half-lives of multi-quasiparticle isomeric states
journal, October 2014

Large-amplitude motion in superfluid fermi droplets
journal, January 1990

    Sort by:
    [ × clear filter / sort ]

    Figures / Tables found in this record:

    Table 1 (p. 10)table
    Table 2 (p. 11)table
    Figure 1 (p. 12)figure
    Figure 2 (p. 13)figure
    Figure 3 (p. 14)figure
      [ × clear filter / sort ]
      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

      Similar Records in DOE PAGES and OSTI.GOV collections: