Mass determination near $N=20$ for Al and Na isotopes

Mass determination near $N = 20$ for Al and Na isotopes

A. T. Gallant, M. Alanssari, J. C. Bale, C. Andreoiu, B. R. Barquest, U. Chowdhury, J. Even, A. Finlay, D. Frekers, G. Gwinner, R. Klawitter, B. Kootte, A. A. Kwiatkowski, D. Lascar, K. G. Leach, E. Leistenschneider, A. Lennarz, A. J. Mayer, D. Short, R. Thompson, M. Wieser, D. Lunney, and J. Dilling

Phys. Rev. C 96, 024325 – Published 31 August 2017

Abstract

We report on the mass measurements of ${}^{31, 32}{Na}$ and ${}^{29, 34, 35}{Al}$ , performed with the TITAN Penning trap mass spectrometer at TRIUMF. The mass excesses were found to be $12246 (14)$ and $18638 (37)$ keV for ${}^{31, 32}{Na}$ and $- 18207.77 (37), - 3000.5 (29)$ , and $- 223.7 (73)$ keV for ${}^{29, 34, 35}{Al}$ , respectively. Our measurements confirm the observation of a crossover in the two-neutron separation energies of ${}^{33}{Mg}$ and ${}^{34}{Al}$ . We did not observe the recently reported, long-lived, isomeric state of ${}^{34}{Al}$ , but, based on the previously measured half-lives, the mass value of the ground state was determined.

Received 6 June 2017

DOI:https://doi.org/10.1103/PhysRevC.96.024325

Physics Subject Headings (PhySH)

Binding energy & masses

20 ≤ A ≤ 38

Mass spectrometry

Nuclear Physics

Authors & Affiliations

A. T. Gallant^1,2,*, M. Alanssari³, J. C. Bale^1,2, C. Andreoiu⁴, B. R. Barquest², U. Chowdhury^2,5,†, J. Even^2,‡, A. Finlay^1,2, D. Frekers³, G. Gwinner⁵, R. Klawitter^6,2, B. Kootte^5,2, A. A. Kwiatkowski^2,7, D. Lascar², K. G. Leach^2,4,§, E. Leistenschneider^1,2, A. Lennarz^2,3, A. J. Mayer⁸, D. Short^2,4, R. Thompson⁸, M. Wieser⁸, D. Lunney⁹, and J. Dilling^1,2

¹Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
²TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
³Institut für Kernphysik, Westfälische Wilhelms-Universität, 48149 Münster, Germany
⁴Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
⁵Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
⁶Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
⁷Department of Physics and Astronomy, Cyclotron Institute Texas A & M University, College Station, Texas 77843, USA
⁸Department of Physics and Astronomy University of Calgary, Calgary, Alberta T2N 1N4, Canada
⁹CSNSM-IN2P3-CNRS, Université Paris 11, 91405 Orsay, France

^*Present address: Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, USA; agallant@triumf.ca
^†Present address: SNOLAB, 1039 Regional Road 24, Lively, Ontario P3Y 1N2, Canada.
^‡Present address: KVI-Center for Advanced Radiation Technology, University of Groningen, 9747 AA Groningen, the Netherlands.
^§Present address: Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 96, Iss. 2 — August 2017

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics