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Article: α-decay-correlated mass measurement of 206,207g,mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system

Titleα-decay-correlated mass measurement of 206,207g,mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system
Authors
Issue Date2021
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prc/
Citation
Physical Review C: covering nuclear physics, 2021, v. 104 n. 4, p. article no. 044617 How to Cite?
AbstractThe atomic masses of the isotopes Ra-206,Ra-207 have been measured via decay-correlated mass spectroscopy using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The Ra isotopes were produced as fusion-evaporation products in the V-51 + Tb-159 reaction system and delivered by the gas-filled recoil ion separator GARIS-II at RIKEN. The alpha-TOF detector provides for high-accuracy mass measurements by correlating time-of-flight signals with subsequent alpha-decay events. The masses of Ra-206 and (207)g,mRa were directly measured using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The mass excesses of (206,207)gRa and the excitation energy of Ra-207m were determined to be ME = 3540(50) keV/c(2), 3538(15) keV/c(2), and Eex = 552(42) keV, respectively. The alpha-decay branching ratio of 207mRa, b alpha = 0.26(20), was directly determined from decay-correlated time-of-flight signals, and the reduced alpha width of (207)mRa was calculated to be 82 = 43+68 -34 keV from the branching ratio. The spin-parity of (207)mRa was confirmed to be J(pi) = 13/2(-) from decay correlated mass measurement results.
Persistent Identifierhttp://hdl.handle.net/10722/307916
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.223
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorNiwase, T-
dc.contributor.authorWada, M-
dc.contributor.authorSchury, P-
dc.contributor.authorBrionnet, P-
dc.contributor.authorChen, S-
dc.contributor.authorHashimoto, T-
dc.contributor.authorHaba, H-
dc.contributor.authorHirayama, Y-
dc.contributor.authorHou, DS-
dc.contributor.authorIimura, S-
dc.contributor.authorIshiyama, H-
dc.contributor.authorIshizawa, S-
dc.contributor.authorIto, Y-
dc.contributor.authorKaji, D-
dc.contributor.authorKimura, S-
dc.contributor.authorLiu, J-
dc.contributor.authorMiyatake, H-
dc.contributor.authorMoon, JY-
dc.contributor.authorMorimoto, K-
dc.contributor.authorMorita, K-
dc.contributor.authorNagae, D-
dc.contributor.authorRosenbusch, M-
dc.contributor.authorTakamine, A-
dc.contributor.authorTanaka, T-
dc.contributor.authorWatanabe, YX-
dc.contributor.authorWollnik, H-
dc.contributor.authorXIAN, W-
dc.contributor.authorYan, SX-
dc.date.accessioned2021-11-12T13:39:46Z-
dc.date.available2021-11-12T13:39:46Z-
dc.date.issued2021-
dc.identifier.citationPhysical Review C: covering nuclear physics, 2021, v. 104 n. 4, p. article no. 044617-
dc.identifier.issn2469-9985-
dc.identifier.urihttp://hdl.handle.net/10722/307916-
dc.description.abstractThe atomic masses of the isotopes Ra-206,Ra-207 have been measured via decay-correlated mass spectroscopy using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The Ra isotopes were produced as fusion-evaporation products in the V-51 + Tb-159 reaction system and delivered by the gas-filled recoil ion separator GARIS-II at RIKEN. The alpha-TOF detector provides for high-accuracy mass measurements by correlating time-of-flight signals with subsequent alpha-decay events. The masses of Ra-206 and (207)g,mRa were directly measured using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The mass excesses of (206,207)gRa and the excitation energy of Ra-207m were determined to be ME = 3540(50) keV/c(2), 3538(15) keV/c(2), and Eex = 552(42) keV, respectively. The alpha-decay branching ratio of 207mRa, b alpha = 0.26(20), was directly determined from decay-correlated time-of-flight signals, and the reduced alpha width of (207)mRa was calculated to be 82 = 43+68 -34 keV from the branching ratio. The spin-parity of (207)mRa was confirmed to be J(pi) = 13/2(-) from decay correlated mass measurement results.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prc/-
dc.relation.ispartofPhysical Review C: covering nuclear physics-
dc.rightsCopyright [2021] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevC.104.044617].-
dc.titleα-decay-correlated mass measurement of 206,207g,mRa using an α-TOF detector equipped multireflection time-of-flight mass spectrograph system-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevC.104.044617-
dc.identifier.scopuseid_2-s2.0-85117383393-
dc.identifier.hkuros330324-
dc.identifier.volume104-
dc.identifier.issue4-
dc.identifier.spagearticle no. 044617-
dc.identifier.epagearticle no. 044617-
dc.identifier.isiWOS:000711198200003-
dc.publisher.placeUnited States-

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