• Login
    View Item 
    •   Home
    • Faculty/ Researcher Works
    • Faculty/ Researcher Works
    • View Item
    •   Home
    • Faculty/ Researcher Works
    • Faculty/ Researcher Works
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of TUScholarShareCommunitiesDateAuthorsTitlesSubjectsGenresThis CollectionDateAuthorsTitlesSubjectsGenres

    My Account

    LoginRegister

    Help

    AboutPeoplePoliciesHelp for DepositorsData DepositFAQs

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    1704.01082v2.pdf
    Size:
    427.5Kb
    Format:
    PDF
    Download
    Genre
    Pre-print
    Date
    2017-06-19
    Author
    An, FP
    Balantekin, AB
    Band, HR
    Bishai, M
    Blyth, S
    Cao, D
    Cao, GF
    Cao, J
    Chan, YL
    Chang, JF
    Chang, Y
    Chen, HS
    Chen, QY
    Chen, SM
    Chen, YX
    Chen, Y
    Cheng, J
    Cheng, ZK
    Cherwinka, JJ
    Chu, MC
    Chukanov, A
    Cummings, JP
    Ding, YY
    Diwan, MV
    Dolgareva, M
    Dove, J
    Dwyer, DA
    Edwards, WR
    Gill, R
    Gonchar, M
    Gong, GH
    Gong, H
    Grassi, M
    Gu, WQ
    Guo, L
    Guo, XH
    Guo, YH
    Guo, Z
    Hackenburg, RW
    Hans, S
    He, M
    Heeger, KM
    Heng, YK
    Higuera, A
    Hsiung, YB
    Hu, BZ
    Hu, T
    Huang, EC
    Huang, HX
    Huang, XT
    Huang, YB
    Huber, P
    Huo, W
    Hussain, G
    Jaffe, DE
    Jen, KL
    Ji, XP
    Ji, XL
    Jiao, JB
    Johnson, RA
    Jones, D
    Kang, L
    Kettell, SH
    Khan, A
    Kohn, S
    Kramer, M
    Kwan, KK
    Kwok, MW
    Langford, TJ
    Lau, K
    Lebanowski, L
    Lee, J
    Lee, JHC
    Lei, RT
    Leitner, R
    Leung, JKC
    Li, C
    Li, DJ
    Li, F
    Li, GS
    Li, QJ
    Li, S
    Li, SC
    Li, WD
    Li, XN
    Li, XQ
    Li, YF
    Li, ZB
    Liang, H
    Lin, CJ
    Lin, GL
    Lin, S
    Lin, SK
    Lin, YC
    Ling, JJ
    Link, JM
    Littenberg, L
    Littlejohn, BR
    Liu, JL
    Liu, JC
    Show allShow less
    Subject
    Daya Bay Collaboration
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4882
    
    Metadata
    Show full item record
    DOI
    10.1103/PhysRevLett.118.251801
    Abstract
    © 2017 American Physical Society. The Daya Bay experiment has observed correlations between reactor core fuel evolution and changes in the reactor antineutrino flux and energy spectrum. Four antineutrino detectors in two experimental halls were used to identify 2.2 million inverse beta decays (IBDs) over 1230 days spanning multiple fuel cycles for each of six 2.9 GWth reactor cores at the Daya Bay and Ling Ao nuclear power plants. Using detector data spanning effective Pu239 fission fractions F239 from 0.25 to 0.35, Daya Bay measures an average IBD yield σf of (5.90±0.13)×10-43 cm2/fission and a fuel-dependent variation in the IBD yield, dσf/dF239, of (-1.86±0.18)×10-43 cm2/fission. This observation rejects the hypothesis of a constant antineutrino flux as a function of the Pu239 fission fraction at 10 standard deviations. The variation in IBD yield is found to be energy dependent, rejecting the hypothesis of a constant antineutrino energy spectrum at 5.1 standard deviations. While measurements of the evolution in the IBD spectrum show general agreement with predictions from recent reactor models, the measured evolution in total IBD yield disagrees with recent predictions at 3.1σ. This discrepancy indicates that an overall deficit in the measured flux with respect to predictions does not result from equal fractional deficits from the primary fission isotopes U235, Pu239, U238, and Pu241. Based on measured IBD yield variations, yields of (6.17±0.17) and (4.27±0.26)×10-43 cm2/fission have been determined for the two dominant fission parent isotopes U235 and Pu239. A 7.8% discrepancy between the observed and predicted U235 yields suggests that this isotope may be the primary contributor to the reactor antineutrino anomaly.
    Citation to related work
    American Physical Society (APS)
    Has part
    Physical Review Letters
    ADA compliance
    For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4864
    Scopus Count
    Collections
    Faculty/ Researcher Works

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Temple University Libraries | 1900 N. 13th Street | Philadelphia, PA 19122
    (215) 204-8212 | scholarshare@temple.edu
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.