Pith. sign in

REVIEW 1 cited by

Breakdown of the Isobaric Multiplet Mass Equation for the A = 20 and 21 Multiplets

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1409.1477 v1 pith:NYH5EIGM submitted 2014-09-04 nucl-ex

A. T. Gallant , M. Brodeur , C. Andreoiu , A. Bader , A. Chaudhuri , U. Chowdhury , A. Grossheim , R. Klawitter
show 16 more authors
A. A. Kwiatkowski K. G. Leach A. Lennarz T. D. Macdonald B. E. Schultz J. Lassen H. Heggen S. Raeder A. Teigelhöfer B. A. Brown A. Magilligan J. D. Holt J. Menéndez J. Simonis A. Schwenk J. Dilling
This is my paper · ORCID
classification nucl-ex
keywords massisobaricisospinmeasurementsmultipletsequationmultipletnon-conserving
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Using the Penning trap mass spectrometer TITAN, we performed the first direct mass measurements of 20,21Mg, isotopes that are the most proton-rich members of the A = 20 and A = 21 isospin multiplets. These measurements were possible through the use of a unique ion-guide laser ion source, a development that suppressed isobaric contamination by six orders of magnitude. Compared to the latest atomic mass evaluation, we find that the mass of 21Mg is in good agreement but that the mass of 20Mg deviates by 3{\sigma}. These measurements reduce the uncertainties in the masses of 20,21Mg by 15 and 22 times, respectively, resulting in a significant departure from the expected behavior of the isobaric multiplet mass equation in both the A = 20 and A = 21 multiplets. This presents a challenge to shell model calculations using either the isospin non-conserving USDA/B Hamiltonians or isospin non-conserving interactions based on chiral two- and three-nucleon forces.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Lattice simulation of nucleon distribution and shell closure in the proton-rich nucleus $^{22}$Si

    nucl-th 2024-11 conditional novelty 7.0 of 10

    Lattice chiral EFT simulations predict that 22Si is bound against two-proton emission and that its protons and neutrons fill the Z=14 and N=8 shells.

Pith tools