High-precision mass measurements for the isobaric multiplet mass equation at A=52

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Nesterenko , D A , Kankainen , A , Canete , L , Block , M , Cox , D , Eronen , T , Fahlander , C , Forsberg , U , Gerl , J , Golubev , P , Hakala , J , Jokinen , A , Kolhinen , V S , Koponen , J , Lalovic , N , Lorenz , C , Moore , I D , Papadakis , P , Reinikainen , J , Rinta-Antila , S , Rudolph , D , Sarmiento , L G , Voss , A & Äystö , J 2017 , ' High-precision mass measurements for the isobaric multiplet mass equation at A=52 ' , Journal of Physics G: Nuclear and Particle Physics , vol. 44 , no. 6 , 065103 . https://doi.org/10.1088/1361-6471/aa67ae

Title: High-precision mass measurements for the isobaric multiplet mass equation at A=52
Author: Nesterenko, D. A.; Kankainen, A.; Canete, L.; Block, M.; Cox, D.; Eronen, T.; Fahlander, C.; Forsberg, U.; Gerl, J.; Golubev, P.; Hakala, J.; Jokinen, A.; Kolhinen, V. S.; Koponen, J.; Lalovic, N.; Lorenz, Ch; Moore, I. D.; Papadakis, P.; Reinikainen, J.; Rinta-Antila, S.; Rudolph, D.; Sarmiento, L. G.; Voss, A.; Äystö, J.
Contributor organization: Helsinki Institute of Physics
Date: 2017-06
Language: eng
Number of pages: 19
Belongs to series: Journal of Physics G: Nuclear and Particle Physics
ISSN: 0954-3899
DOI: https://doi.org/10.1088/1361-6471/aa67ae
URI: http://hdl.handle.net/10138/312773
Abstract: Masses of Co-52, (52)Com, Fe-52, Fe-52(m), and Mn-52 have been measured with the JYFLTRAP double Penning trap mass spectrometer. The isobaric multiplet mass equation for the T = 2 quintet at A = 52 has been studied employing the new mass values. No significant breakdown (beyond the 3 sigma level) of the quadratic form of the IMME was observed (chi(2)/n = 2.4). The cubic coefficient was 6.0(32) keV (chi(2)/n = 1.1). The excitation energies for the isomer and the T = 2 isobaric analog state in Co-52 have been determined to be 374(13) keV and 2922(13) keV, respectively. The measured mass values for Co-52 and (52)Com are 29(10) keV and 16(15) keV higher, respectively, than obtained in a recent storage-ring experiment, and significantly lower than predicted by extrapolations. Consequently, this has an impact on the proton separation energies for Co-52 and Ni-53 relevant for the astrophysical rapid proton capture process. The Q value for the proton decay from the 19/2(-) isomer in Co-53 has been determined with an unprecedented precision, Q(p) = 1558.8(17) keV.
Subject: Penning trap
mass measurement
isobaric multiplet
Co-52
COULOMB DISPLACEMENT ENERGIES
PROTON RADIOACTIVITY
ANALOG STATES
MIRROR NUCLEI
PENNING TRAPS
RAMSEY METHOD
BETA-RAY
SPECTROSCOPY
DECAY
MN-52
114 Physical sciences
Peer reviewed: Yes
Usage restriction: openAccess
Self-archived version: acceptedVersion


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