ENTRY 10373 20021206 00001037300000001 SUBENT 10373001 20021206 00001037300100001 BIB 13 30 1037300100002 INSTITUTE (1USANBS,1USAHRV,1USAAMW) 1037300100003 REFERENCE (J,PR/C,8,1179,197310) 1037300100004 AUTHOR (R.G.Arnold,B.T.Chertok,I.G.Schroeder,J.L.Alberi) 1037300100005 TITLE Search for Doubly Radiative np Capture 1037300100006 FACILITY (REAC,1USANBS) 1037300100007 INC-SPECT Beam of MgO filtered thermal neutrons. 1037300100008 SAMPLE Target material: 175 gm of H2O in a Lucite cylinder, 1037300100009 6 cm in diameter by 7 cm long with 0.16-cm wall 1037300100010 thickness. 1037300100011 METHOD Searched for two-photon np capture by looking for 1037300100012 gamma rays of the appropiate energy emerging in 1037300100013 coincidence. Foreground plus background spectra 1037300100014 accumulated in straightforward coincidence runs 1037300100015 with H2O target in place. 1037300100016 Accidental component measured in a delayed-coincidence 1037300100017 spectra obtained with an arbitrary delay in one leg 1037300100018 of the coincidence circuit using the H2O target. 1037300100019 Background-prompt-coincidence spectra obtained using 1037300100020 D2O in place of H2O. 1037300100021 DETECTOR (NAICR) Two 5 x 5 cm NaI detectors. RCA photomultiplier1037300100022 tubes used for fast timing and good energy resolution.1037300100023 ASSUMED (ASSUM,1-H-1(N,G)1-H-2,,SIG) Assumed cross section. 1037300100024 for single-photon capture, theoretically 302 mb. 1037300100025 CORRECTION Corrections are made for absorptions, detector 1037300100026 efficiencies, solid angles and fraction of phase 1037300100027 space available. 1037300100028 STATUS (APRVD) Approved by author 1037300100029 HISTORY (19731220C) 1037300100030 (19830425A) Converted to REACTION formalism 1037300100031 (20021206A) Converted to new date formats, lower case. 1037300100032 ENDBIB 30 0 1037300100033 NOCOMMON 0 0 1037300100034 ENDSUBENT 33 0 1037300199999 SUBENT 10373002 20021206 00001037300200001 BIB 1 1 1037300200002 REACTION (1-H-1(N,2G)1-H-2,,SIG,,MXW) 1037300200003 ENDBIB 1 0 1037300200004 NOCOMMON 0 0 1037300200005 DATA 3 1 1037300200006 EN-DUMMY DATA-MAX ASSUM 1037300200007 EV MB B 1037300200008 0.025 1.0 302. 1037300200009 ENDDATA 3 0 1037300200010 ENDSUBENT 9 0 1037300299999 ENDENTRY 2 0 1037399999999