First direct mass measurement of the neutron-deficient nucleus $^{24}\mathrm{Al}$

First direct mass measurement of the neutron-deficient nucleus ${}^{24}{Al}$

U. Chowdhury, K. G. Leach, C. Andreoiu, A. Bader, M. Brodeur, A. Chaudhuri, A. T. Gallant, A. Grossheim, G. Gwinner, R. Klawitter, A. A. Kwiatkowski, A. Lennarz, T. D. Macdonald, J. Pearkes, B. E. Schultz, and J. Dilling

Phys. Rev. C 92, 045803 – Published 13 October 2015

Abstract

The first direct mass measurement of the neutron-deficient nucleus ${}^{24}{Al}$ was performed via Penning-Trap Mass Spectrometry (PTMS) using TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN). This measurement was facilitated by the use of TRIUMF's new Ion-Guide Laser Ion Source (IG-LIS), which reduced $A = 24$ isobaric contamination in the delivered beam by nearly six orders of magnitude. The measured mass excess was found to be $Δ = - 48.86 (23)$ keV, which is five times more precise than the value quoted in the most recent atomic mass evaluation. When combined with the relevant ${}^{24}{Al}$ excitation energy, and a recent measurement of the ${}^{23}{Mg}$ mass, the astrophysical ${}^{23}{Mg} {(p, γ)}^{24} Al$ reaction resonance energy is extracted as $E_{r} = 480.8 (14)$ keV. The presented value shows a $2 σ$ disagreement with the direct measurement of this quantity by the DRAGON recoil spectrometer.

Received 15 May 2015

DOI:https://doi.org/10.1103/PhysRevC.92.045803

Authors & Affiliations

U. Chowdhury^1,2, K. G. Leach^1,3,4,*, C. Andreoiu³, A. Bader^1,5, M. Brodeur⁶, A. Chaudhuri^1,†, A. T. Gallant^1,7, A. Grossheim¹, G. Gwinner², R. Klawitter^1,8, A. A. Kwiatkowski^1,‡, A. Lennarz^1,9, T. D. Macdonald^1,7, J. Pearkes⁷, B. E. Schultz^1,§, and J. Dilling^1,7

¹TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
²Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 Canada
³Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
⁴Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA
⁵École des Mines de Nantes, 4 rue Alfred Kastler, B.P. 20722, F-44307, Nantes, France
⁶Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
⁷Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
⁸Max-Planck-Institut für Kernphysik, Saupfercheckweg, D-69117 Heidelberg, Germany
⁹Institut für Kernphysik, Westfalische Wilhelms-Universität, D-48149 Münster, Germany

^*kleach@triumf.ca
^†Present address: Institute for Basic Science, RISP, 70 Yuseong-daero 1689-gil, Yuseong-gu, Daejeon 305-811, Korea.
^‡Present address: Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA.
^§Present address: Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 92, Iss. 4 — October 2015

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

First direct mass measurement of the neutron-deficient nucleus ${}^{24}{Al}$

U. Chowdhury, K. G. Leach, C. Andreoiu, A. Bader, M. Brodeur, A. Chaudhuri, A. T. Gallant, A. Grossheim, G. Gwinner, R. Klawitter, A. A. Kwiatkowski, A. Lennarz, T. D. Macdonald, J. Pearkes, B. E. Schultz, and J. Dilling

Phys. Rev. C 92, 045803 – Published 13 October 2015

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

First direct mass measurement of the neutron-deficient nucleus Al24

U. Chowdhury, K. G. Leach, C. Andreoiu, A. Bader, M. Brodeur, A. Chaudhuri, A. T. Gallant, A. Grossheim, G. Gwinner, R. Klawitter, A. A. Kwiatkowski, A. Lennarz, T. D. Macdonald, J. Pearkes, B. E. Schultz, and J. Dilling

Phys. Rev. C 92, 045803 – Published 13 October 2015

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

First direct mass measurement of the neutron-deficient nucleus ${}^{24}{Al}$