Skip navigation
Skip navigation

Improved precision on the experimental E0 decay branching ratio of the Hoyle state

Eriksen, Tomas Kvalheim; Kibedi, Tibor; Reed, Matthew; Stuchbery, Andrew; Cook, Kimberley; Akber, Aqeel; Alshahrani, Badriah; Avaa, Abraham A.; Banerjee, kaushik; Berriman, Annette; Bezzina, Lauren; Bignell, Lindsey; Buete, Jacob; Carter, Ian; Coombes, Benjamin; Dowie, Jackson; Dasgupta, Mahananda; Evitts, L. J.; Garnsworthy, B. A.; Gerathy, Matthew; Gray, Timothy; Hinde, David; Hoang, T. H.; Hota, Sankha; Ideguchi, E.; Jones, P.; Lane, Gregory; McCormick, Brendan; Mitchell, Alan John; Palalani, Nyaladzi; Palazzo, Thomas; Ripper, Michaela; Simpson, Ed; Smallcombe, J.; Swinton-Bland, Ben; Tanaka, Taiki; Gabor Tornyi, Tamas; de Vries, Mitchell

Description

Background: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0...[Show more]

dc.contributor.authorEriksen, Tomas Kvalheim
dc.contributor.authorKibedi, Tibor
dc.contributor.authorReed, Matthew
dc.contributor.authorStuchbery, Andrew
dc.contributor.authorCook, Kimberley
dc.contributor.authorAkber, Aqeel
dc.contributor.authorAlshahrani, Badriah
dc.contributor.authorAvaa, Abraham A.
dc.contributor.authorBanerjee, kaushik
dc.contributor.authorBerriman, Annette
dc.contributor.authorBezzina, Lauren
dc.contributor.authorBignell, Lindsey
dc.contributor.authorBuete, Jacob
dc.contributor.authorCarter, Ian
dc.contributor.authorCoombes, Benjamin
dc.contributor.authorDowie, Jackson
dc.contributor.authorDasgupta, Mahananda
dc.contributor.authorEvitts, L. J.
dc.contributor.authorGarnsworthy, B. A.
dc.contributor.authorGerathy, Matthew
dc.contributor.authorGray, Timothy
dc.contributor.authorHinde, David
dc.contributor.authorHoang, T. H.
dc.contributor.authorHota, Sankha
dc.contributor.authorIdeguchi, E.
dc.contributor.authorJones, P.
dc.contributor.authorLane, Gregory
dc.contributor.authorMcCormick, Brendan
dc.contributor.authorMitchell, Alan John
dc.contributor.authorPalalani, Nyaladzi
dc.contributor.authorPalazzo, Thomas
dc.contributor.authorRipper, Michaela
dc.contributor.authorSimpson, Ed
dc.contributor.authorSmallcombe, J.
dc.contributor.authorSwinton-Bland, Ben
dc.contributor.authorTanaka, Taiki
dc.contributor.authorGabor Tornyi, Tamas
dc.contributor.authorde Vries, Mitchell
dc.date.accessioned2021-03-02T00:11:16Z
dc.date.available2021-03-02T00:11:16Z
dc.identifier.issn2469-9985
dc.identifier.urihttp://hdl.handle.net/1885/224591
dc.description.abstractBackground: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0 decay branching ratio of the Hoyle state, and the current 10% uncertainty on the radiative width stems mainly from the uncertainty on this ratio. The rate of the 3α process is an important input parameter in astrophysical calculations on stellar evolution, and a high precision is imperative to constrain the possible outcomes of astrophysical models.
dc.description.sponsorshipThe project was supported by the Australian Research Council Discovery Grants No. DP140102986, No. DP170101673, and No. DP170102423. Operation of the ANU Heavy Ion Accelerator Facility is supported by the NCRIS HIA capability. The support from technical staff for the development of the pair spectrometer, as well as during the long experimental runs, is greatly appreciated. This work was partially supported by the International Joint Research Promotion Program of Osaka University and JSPS KAKENHI Grant No. JP 17H02893, the Natural Sciences and Engineering Research Council of Canada, the National Research Foundation (NRF), South Africa, under Grants No. 93533 and No. 118645.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rights© 2020 American Physical Society
dc.sourcePhysical Review C: Nuclear Physics
dc.titleImproved precision on the experimental E0 decay branching ratio of the Hoyle state
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume102
dcterms.dateAccepted2020-07-29
dc.date.issued2020-08-17
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationU4474173xPUB33
local.publisher.urlhttps://journals.aps.org/
local.type.statusPublished Version
local.contributor.affiliationEriksen, Tomas, College of Science, ANU
local.contributor.affiliationKibedi, Tibor, College of Science, ANU
local.contributor.affiliationReed, Matthew, College of Science, ANU
local.contributor.affiliationStuchbery, Andrew, College of Science, ANU
local.contributor.affiliationCook, Kimberley, College of Asia and the Pacific, ANU
local.contributor.affiliationAkber, Aqeel, College of Science, ANU
local.contributor.affiliationAlshahrani, Badriah, College of Science, ANU
local.contributor.affiliationAvaa, Abraham A., University of the Witwatersrand
local.contributor.affiliationBanerjee, Kaushik, College of Science, ANU
local.contributor.affiliationBerriman, Annette, College of Science, ANU
local.contributor.affiliationBezzina, Lauren, College of Science, ANU
local.contributor.affiliationBignell, Lindsey, College of Science, ANU
local.contributor.affiliationBuete, Jacob, College of Science, ANU
local.contributor.affiliationCarter, Ian, College of Science, ANU
local.contributor.affiliationCoombes, Benjamin, College of Science, ANU
local.contributor.affiliationDowie, Jackson, College of Science, ANU
local.contributor.affiliationDasgupta, Mahananda, College of Science, ANU
local.contributor.affiliationEvitts, L. J., TRIUMF
local.contributor.affiliationGarnsworthy, B. A., TRIUMF
local.contributor.affiliationGerathy, Matthew, College of Science, ANU
local.contributor.affiliationGray, Timothy, College of Science, ANU
local.contributor.affiliationHinde, David, College of Science, ANU
local.contributor.affiliationHoang, T. H., Osaka University
local.contributor.affiliationHota, Sankha, College of Science, ANU
local.contributor.affiliationIdeguchi, E., Osaka University
local.contributor.affiliationJones, P., iThemba Laboratory for Accelerator Based Sciences
local.contributor.affiliationLane, Gregory, College of Science, ANU
local.contributor.affiliationMcCormick, Brendan, College of Science, ANU
local.contributor.affiliationMitchell, Alan John, College of Science, ANU
local.contributor.affiliationPalalani, Nyaladzi, College of Science, ANU
local.contributor.affiliationPalazzo, Thomas, College of Science, ANU
local.contributor.affiliationRipper, Michaela, College of Science, ANU
local.contributor.affiliationSimpson, Ed, College of Science, ANU
local.contributor.affiliationSmallcombe, J., TRIUMF
local.contributor.affiliationSwinton-Bland, Ben, College of Science, ANU
local.contributor.affiliationTanaka, Taiki, College of Science, ANU
local.contributor.affiliationGabor Tornyi, Tamas, College of Science, ANU
local.contributor.affiliationde Vries, Mitchell, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/DP140102986
dc.relationhttp://purl.org/au-research/grants/arc/DP170101673
dc.relationhttp://purl.org/au-research/grants/arc/DP170102423
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage11
local.identifier.doi10.1103/PhysRevC.102.024320
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2022-08-21T08:17:07Z
local.identifier.scopusID2-s2.0-85092917121
local.identifier.thomsonIDWOS:000564002200004
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/32262..."Publisher's version can be made open access on institutional repository" from SHERPA/RoMEO site (as at 2.3.2021).
CollectionsANU Research Publications

Download

File Description SizeFormat Image
02_Eriksen_Improved_precision_on_the_2020.pdf4.01 MBAdobe PDFThumbnail


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  17 November 2022/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator