ENTRY 31576 20220613 32083157600000001 SUBENT 31576001 20220613 32083157600100001 BIB 12 39 3157600100002 TITLE Activation Cross Section Measurements of 3157600100003 16O(n,3He)14C and 16O(n,t)14N above Neutron Thresholds 3157600100004 up to 18.1 MeV 3157600100005 AUTHOR (J.H.Park, C.S.Lee, Y.K.Kwon, J.H.Lee, J.Y.Kim, 3157600100006 K.B.Lee, H.Park) 3157600100007 INSTITUTE (3KORKSR) 3157600100008 (3KORCHA) Chung-Ang University, Seoul 3157600100009 REFERENCE (J,KPS,47,23,2005) 3157600100010 FACILITY (CYCLO,3KORKRM) The MC-50 cyclotron at KIRAMS is an 3157600100011 azimuthally varying- field (AVF)-type cyclotron. 3157600100012 INC-SOURCE (P-BE) Semi-monoenergetic neutrons with a maximum 3157600100013 energy of 18.1 MeV were generated by using the 3157600100014 9Be(p,n)9B reaction with the 20-MeV proton beam 3157600100015 delivered from the MC-50 cyclotron. The Be target 3157600100016 system consisted of a 1-mm-thick 9Be target and a 3157600100017 proton stopper with a 1-mm-thick aluminum wall and a 3157600100018 1-mm-thick aluminum disc. 3157600100019 METHOD (ACTIV) Two methods were used: 3157600100020 * LSC (liquid scintillation counting) for 3157600100021 cross section measurement and direct counting 3157600100022 of 14C atoms 3157600100023 * AMS (accelerator mass spectrometry) measurement 3157600100024 for direct counting of 14C atoms. 3157600100025 SAMPLE Ten C3D6O (d-acetone) liquid targets (acetone-d6, 3157600100026 certified 100 at.% D) contained in 1-c.c. ampules were 3157600100027 irradiated with neutrons. Nine samples were used for 3157600100028 the a LSC measurement, and the one remaining sample 3157600100029 was used for the AMS measurement. 3157600100030 DETECTOR (SCIN) LSC measurements at the Korea Research 3157600100031 Institute of Standard and Science (KRISS) 3157600100032 by taking gamma-ray energy spectra with an LSC 3157600100033 system (Quantulus Liquid Scintillation Spectrometer) 3157600100034 ERR-ANALYS (DATA-ERR) The neutron flux, the statistical 3157600100035 uncertainties of gamma-ray counts, and the efficiency 3157600100036 of the LSC system were all included in the error of 3157600100037 the cross section. 3157600100038 STATUS (TABLE) data from Table 2 of the reference. 3157600100039 HISTORY (20060622C) SD 3157600100040 (20220613A) On. Major revisions in 002 and 003. 3157600100041 ENDBIB 39 0 3157600100042 NOCOMMON 0 0 3157600100043 ENDSUBENT 42 0 3157600199999 SUBENT 31576002 20220613 32083157600200001 BIB 2 2 3157600200002 REACTION (8-O-16(N,HE3)6-C-14,,SIG,,SPA) 3157600200003 HISTORY (20220613A) On. REACTION(SF8): SPA added. 3157600200004 ENDBIB 2 0 3157600200005 NOCOMMON 0 0 3157600200006 DATA 4 1 3157600200007 EN-MIN EN-MAX DATA DATA-ERR 3157600200008 MEV MEV MB MB 3157600200009 15.5 18.1 52. 16. 3157600200010 ENDDATA 3 0 3157600200011 ENDSUBENT 10 0 3157600299999 SUBENT 31576003 20220613 32083157600300001 BIB 2 2 3157600300002 REACTION (8-O-16(N,T)7-N-14,,SIG,,SPA) 3157600300003 HISTORY (20220613A) On. REACTION(SF8): SPA added. 3157600300004 ENDBIB 2 0 3157600300005 NOCOMMON 0 0 3157600300006 DATA 4 1 3157600300007 EN-MIN EN-MAX DATA DATA-ERR 3157600300008 MEV MEV MB MB 3157600300009 15.5 18.1 0.25 0.11 3157600300010 ENDDATA 3 0 3157600300011 ENDSUBENT 10 0 3157600399999 ENDENTRY 3 0 3157699999999