大亚湾和PROSPECT联合测定来自235U和239Pu裂变的反应堆反中微子能谱
Joint Determination of Reactor Antineutrino Spectra from ^{235}U and ^{239}Pu Fission by Daya Bay and PROSPECT.
作者信息
An F P, Andriamirado M, Balantekin A B, Band H R, Bass C D, Bergeron D E, Berish D, Bishai M, Blyth S, Bowden N S, Bryan C D, Cao G F, Cao J, Chang J F, Chang Y, Chen H S, Chen S M, Chen Y, Chen Y X, Cheng J, Cheng Z K, Cherwinka J J, Chu M C, Classen T, Conant A J, Cummings J P, Dalager O, Deichert G, Delgado A, Deng F S, Ding Y Y, Diwan M V, Dohnal T, Dolinski M J, Dolzhikov D, Dove J, Dvořák M, Dwyer D A, Erickson A, Foust B T, Gaison J K, Galindo-Uribarri A, Gallo J P, Gilbert C E, Gonchar M, Gong G H, Gong H, Grassi M, Gu W Q, Guo J Y, Guo L, Guo X H, Guo Y H, Guo Z, Hackenburg R W, Hans S, Hansell A B, He M, Heeger K M, Heffron B, Heng Y K, Hor Y K, Hsiung Y B, Hu B Z, Hu J R, Hu T, Hu Z J, Huang H X, Huang J H, Huang X T, Huang Y B, Huber P, Koblanski J, Jaffe D E, Jayakumar S, Jen K L, Ji X L, Ji X P, Johnson R A, Jones D C, Kang L, Kettell S H, Kohn S, Kramer M, Kyzylova O, Lane C E, Langford T J, LaRosa J, Lee J, Lee J H C, Lei R T, Leitner R, Leung J K C, Li F, Li H L, Li J J, Li Q J, Li R H, Li S, Li S C, Li W D, Li X N, Li X Q, Li Y F, Li Z B, Liang H, Lin C J, Lin G L, Lin S, Ling J J, Link J M, Littenberg L, Littlejohn B R, Liu J C, Liu J L, Liu J X, Lu C, Lu H Q, Lu X, Luk K B, Ma B Z, Ma X B, Ma X Y, Ma Y Q, Mandujano R C, Maricic J, Marshall C, McDonald K T, McKeown R D, Mendenhall M P, Meng Y, Meyer A M, Milincic R, Mueller P E, Mumm H P, Napolitano J, Naumov D, Naumova E, Neilson R, Nguyen T M T, Nikkel J A, Nour S, Ochoa-Ricoux J P, Olshevskiy A, Palomino J L, Pan H-R, Park J, Patton S, Peng J C, Pun C S J, Pushin D A, Qi F Z, Qi M, Qian X, Raper N, Ren J, Morales Reveco C, Rosero R, Roskovec B, Ruan X C, Searles M, Steiner H, Sun J L, Surukuchi P T, Tmej T, Treskov K, Tse W-H, Tull C E, Tyra M A, Varner R L, Venegas-Vargas D, Viren B, Vorobel V, Wang C H, Wang J, Wang M, Wang N Y, Wang R G, Wang W, Wang W, Wang X, Wang Y, Wang Y F, Wang Z, Wang Z, Wang Z M, Weatherly P B, Wei H Y, Wei L H, Wen L J, Whisnant K, White C, Wilhelmi J, Wong H L H, Woolverton A, Worcester E, Wu D R, Wu F L, Wu Q, Wu W J, Xia D M, Xie Z Q, Xing Z Z, Xu H K, Xu J L, Xu T, Xue T, Yang C G, Yang L, Yang Y Z, Yao H F, Ye M, Yeh M, Young B L, Yu H Z, Yu Z Y, Yue B B, Zavadskyi V, Zeng S, Zeng Y, Zhan L, Zhang C, Zhang F Y, Zhang H H, Zhang J W, Zhang Q M, Zhang S Q, Zhang X, Zhang X T, Zhang Y M, Zhang Y X, Zhang Y Y, Zhang Z J, Zhang Z P, Zhang Z Y, Zhao J, Zhao R Z, Zhou L, Zhuang H L, Zou J H
机构信息
Institute of Modern Physics, East China University of Science and Technology, Shanghai.
Department of Physics, Illinois Institute of Technology, Chicago, Illinois.
出版信息
Phys Rev Lett. 2022 Feb 25;128(8):081801. doi: 10.1103/PhysRevLett.128.081801.
A joint determination of the reactor antineutrino spectra resulting from the fission of ^{235}U and ^{239}Pu has been carried out by the Daya Bay and PROSPECT Collaborations. This Letter reports the level of consistency of ^{235}U spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant ^{235}U and ^{239}Pu isotopes and improves the uncertainty of the ^{235}U spectral shape to about 3%. The ^{235}U and ^{239}Pu antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the ^{235}U and ^{239}Pu spectra based on the combination of experiments at low- and highly enriched uranium reactors.
大亚湾合作组和PROSPECT合作组联合测定了由²³⁵U和²³⁹Pu裂变产生的反应堆反中微子能谱。本信函报告了两个实验对²³⁵U能谱测量的一致性水平，并给出了对两个数据集联合分析的新结果。测量结果是一致的。联合分析减少了主要的²³⁵U和²³⁹Pu同位素之间的简并性，并将²³⁵U能谱形状的不确定性提高到约3%。使用维纳-奇异值分解（Wiener-SVD）展开方法从联合反卷积的反应堆能谱中展开²³⁵U和²³⁹Pu反中微子能谱，为其他反应堆反中微子实验和其他应用提供了基于数据的参考。这是首次基于低浓铀反应堆和高浓铀反应堆实验相结合对²³⁵U和²³⁹Pu能谱进行的测量。
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