The average energy and multiplicity of prompt γ-rays from slow neutron-induced fission of 235U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The individual responses from 11 NaI scintillators were corrected for multiple γ-ray interac tions, prompt fission neutrons and background counts before being deconvolved to estimate the emitted spectrum of prompt fission γ-rays. The results give an average γ-ray energy E_ γ of 1.71(5) MeV and multiplicity ν_γ of 2.66(18) considering γ-rays emitted within the energy range 0.8 - 6.8 MeV. The n_TOF data has a slightly larger E_γ and smaller ν_γ than other recent measurements, however the product of the two is in agreement within quoted uncertainties.

WRIGHT T. J.;  SMITH A. G.;  SOSNIN N. V.;  BENNETT S;  DAVIES P.;  POPESCU A. V.;  RYAN J.;  SEKHAR A. G.;  WARREN S.;  ABERLE O.;  AMADUCCI S.;  ANDRZEJEWSKI J.;  AUDOUIN L.;  BACAK M.;  BALIBREA J.;  BARBAGALLO M;  BECVAR F.;  BERTHOUMIEUX E.;  BILLOWES J.;  BOSNAR D.;  BROWN S;  CAAMANO M.;  CALVINO F.;  CALVIANI M.;  CANO-OTT D.;  CARDELLA R.;  CASANOVAS A.;  CERUTTI F.;  CHEN Y. H.;  CHIAVERI E.;  COLONNA N.;  CORTÉS G. P.;  CORTES-GIRALDO M. A.;  COSENTINO Luigi;  DAMONE L.;  DIAKAKI M.;  DOMINGO-PARDO C.;  DRESSLER R.;  DUPONT E.;  DURAN I.;  FERNÁNDEZ-DOMÍNGEZ B.;  FERRARI A.;  FERREIRA P.;  FINOCCHIARO Paolo;  FURMAN V.;  GÖBEL K.;  GARCIA A. R.;  GAWLIK-RAMIEGA A.;  GILARDONI S.;  GLODARIU T.;  GONCALVES I. F.;  GONZÁLEZ-ROMERO E.;  GRIESMAYER E.;  GUERRERO C.;  GUNSING F.;  HARADA H.;  HEINITZ S.;  HEYSE Jan;  JENKINS D. G.;  JERICHA E.;  KAEPPELER F.;  KADI Y.;  KALAMARA A.;  KAVRIGIN P.;  KIMURA A.;  KIVEL Niko;  KOKKORIS M.;  KRTIČKA M.;  KURTULGIL D.;  LEAL-CIDONCHA E.;  LEDERER-WOODS Claudia;  LEEB H.;  LERENDEGUI-MARCO J.;  LO MEO S.;  LONSDALE S.;  MACINA D.;  MANNA A;  MARGANIEC J.;  MARTÍNEZ T.;  MASI A.;  MASSIMI C.;  MASTINU P.;  MASTROMARCO M.;  MAUGERI E.;  MAZZONE A.;  MENDOZA E.;  MENGONI A.;  MILAZZO P.M.;  MINGRONE F.;  MUSUMARRA A.;  NEGRET A.;  NOLTE R.;  OPREA A.;  PATRONIS N.;  PAVLIK A.;  PERKOWSKI J.;  PORRAS I.;  PRAENA J.;  QUESADA J.;  RADECK D.;  RAUSCHER T.;  REIFARTH R.;  RUBBIA C.;  SABATE-GILARTE M;  SAXENA A.;  SCHILLEBEECKX Peter;  SCHUMANN D.;  SEDYSHEV P.;  STAMATOPOULOS A.;  TAGLIENTE G.;  TAIN J.L.;  TARIFENO-SALDIVIA A.;  TASSAN-GOT L.;  VALENTA S.;  VANNINI G.;  VARIALE V.;  VAZ P.;  VENTURA A.;  VLACHOUDIS V.;  VLASTOU R.;  WALLNER A.;  WEISS C.;  WOODS P. J.;  ZUGEC P.; 

2024-05-31

SPRINGER

JRC137189

1434-6001 (online),   

https://link.springer.com/article/10.1140/epja/s10050-024-01277-8,    https://publications.jrc.ec.europa.eu/repository/handle/JRC137189,   

10.1140/epja/s10050-024-01277-8 (online),