ENTRY M0708 20210620 M113M070800000001 SUBENT M0708001 20210620 M113M070800100001 BIB 13 63 M070800100002 TITLE Measurement of the 4He(g,n) reaction from 23 < Eg < M070800100003 70 MeV. M070800100004 AUTHOR (B.Nilsson,J.-O.Adler,B.-E.Andersson,J.R.M.Annand, M070800100005 I.Akkurt,M.J.Boland,G.I.Crawford,K.G.Fissum, K.Hansen, M070800100006 P.D.Harty,D.G.Ireland,L.Isaksson, M.Karlsson,M.Lundin, M070800100007 J.C.Mcgeorge,G.J.Miller, H.Ruijter,A.Sandell, M070800100008 B.Schroder,D.A.Sims,D.Watts) M070800100009 REFERENCE (J,PR/C,75,014007,2007) M070800100010 INSTITUTE (2SWDLND,2UK GLS) M070800100011 FACILITY (MICRT,2SWDLND) Race-track microtron, MAX-lab in Lund. M070800100012 SAMPLE A storage-cell cryostat filled by liquid 4He at M070800100013 liquid-N2 temperature. Target cell was made of M070800100014 80 micron thick Kapton foil with diameter of 90 mm M070800100015 and a height of 75 mm. M070800100016 INC-SOURCE (QMPH,TAGD) Quasimonoenergetic photons from M070800100017 bremsstrahlung tagging facility. M070800100018 DETECTOR (SPEC,SCIN) Two large solid-angle neutron detectors, M070800100019 each consisting of 3 x 3 array on 9 rectangular cells M070800100020 with internal dimensions 20 cm x 20 cm (deep) filled M070800100021 with the liquid scintillator NEA2132A. M070800100022 METHOD (TOF) Time-of-flight spectrometer consisted of liquid M070800100023 and plastic scintillators. M070800100024 ANALYSIS (SHAPE) Pulse-shape discrimination was employed to M070800100025 distinguish neutrons from random photons. M070800100026 ERR-ANALYS (ERR-S) Statistical uncertainties. M070800100027 (ERR-SYS) The systematic uncertainty was dominated by M070800100028 the systematic uncertainty in the neutron-detection M070800100029 efficiency, which ranged from ~ 5% for Eg = 68.5 MeV M070800100030 to 26% for Eg = 24.6 MeV. Other large sources of M070800100031 uncertainty were: M070800100032 * the neutron-inscattering correction(~ 9%), M070800100033 * the neutron-yield attenuation correction (~ 6%), M070800100034 * the number of photons (a combination of the M070800100035 tagger focal-plane live time and the tagging M070800100036 efficiency; ~ 4%): M070800100037 Value Uncertainty (%) M070800100038 Kinematic-dependent quantity M070800100039 Neutron-detection efficiency 0.20 8. M070800100040 Neutron inscattering 1.25 9. M070800100041 Neutron-yield attenuation 0.85 6. M070800100042 Tagger focal-plane live time 0.95 2. M070800100043 Neutron-detector live time 0.50 1. M070800100044 Photon-beam attenuation (in text) < 1. M070800100045 Scale quantity M070800100046 Tagging efficiency 0.25 3. M070800100047 Geometrical acceptance (in text) 2. M070800100048 Target density (in text) 2. M070800100049 Particle misidentification (in text) < 1. M070800100050 COMMENT A comprehensive 4He(g,n) absolute cross section M070800100051 measurements was performed at MAX-lab in Lund. Tagged M070800100052 photons from 23 < Eg < 70 MeV were directed toward a M070800100053 liquid 4He target, and neutrons were identified using M070800100054 pulse-shape discrimination and the time-of-flight M070800100055 technique in two liquid-scintillator detectors M070800100056 arrays. Seven-point angular distributions were M070800100057 measured for 14 photon energies. M070800100058 HISTORY (20070307C) Data were compiled at the MSU SINP CDFE M070800100059 by V.V.Varlamov. M070800100060 (20210620A) Corrected by SD and VV: Author's name M070800100061 corrected (B.Nilson -> B.Nilsson), STATUS, M070800100062 correction in SUBENT 017. Subents 002-015 were M070800100063 merged. Accuracy of data presentation revised M070800100064 according to the table. M070800100065 ENDBIB 63 0 M070800100066 COMMON 1 3 M070800100067 EN-RSL M070800100068 MEV M070800100069 .3 M070800100070 ENDCOMMON 3 0 M070800100071 ENDSUBENT 70 0 M070800199999 SUBENT M0708002 20210620 M113M070800200001 BIB 3 6 M070800200002 REACTION (2-HE-4(G,N)2-HE-3,,DA) M070800200003 STATUS (TABLE) Data from Table III of M070800200004 Phys.Rev.,C75(2007)014007. M070800200005 HISTORY (20210620A) Corrected by SD and VV: Data from Subents M070800200006 003-015 were added, STATUS updated, several values M070800200007 corrected. M070800200008 ENDBIB 6 0 M070800200009 NOCOMMON 0 0 M070800200010 DATA 5 97 M070800200011 EN ANG-CM DATA-CM ERR-S ERR-SYS M070800200012 MEV ADEG MB/SR MB/SR MB/SR M070800200013 24.6 64.1 0.124 0.020 0.023 M070800200014 24.6 79.6 0.154 0.014 0.034 M070800200015 24.6 94.8 0.145 0.010 0.040 M070800200016 24.6 109.6 0.167 0.018 0.049 M070800200017 24.6 124.1 0.087 0.010 0.017 M070800200018 24.6 138.4 0.111 0.018 0.038 M070800200019 26.7 47.9 0.091 0.009 0.015 M070800200020 26.7 63.6 0.114 0.007 0.019 M070800200021 26.7 79.0 0.152 0.007 0.025 M070800200022 26.7 94.2 0.197 0.008 0.036 M070800200023 26.7 109.0 0.202 0.008 0.039 M070800200024 26.7 123.4 0.166 0.009 0.030 M070800200025 26.7 137.9 0.130 0.008 0.025 M070800200026 28.9 47.7 0.079 0.006 0.010 M070800200027 28.9 63.4 0.108 0.005 0.014 M070800200028 28.9 78.7 0.145 0.005 0.020 M070800200029 28.9 93.9 0.144 0.006 0.020 M070800200030 28.9 108.7 0.166 0.006 0.025 M070800200031 28.9 123.4 0.144 0.006 0.021 M070800200032 28.9 137.7 0.109 0.006 0.017 M070800200033 31.1 47.6 0.065 0.005 0.008 M070800200034 31.1 63.2 0.089 0.004 0.010 M070800200035 31.1 78.6 0.105 0.004 0.012 M070800200036 31.1 93.7 0.106 0.004 0.013 M070800200037 31.1 108.6 0.123 0.004 0.015 M070800200038 31.1 123.2 0.115 0.005 0.014 M070800200039 31.1 137.6 0.082 0.004 0.010 M070800200040 34.6 47.5 0.045 0.006 0.005 M070800200041 34.6 63.1 0.061 0.004 0.007 M070800200042 34.6 78.5 0.093 0.004 0.011 M070800200043 34.6 93.6 0.089 0.004 0.010 M070800200044 34.6 108.5 0.094 0.004 0.011 M070800200045 34.6 123.1 0.075 0.004 0.009 M070800200046 34.6 137.5 0.051 0.004 0.006 M070800200047 36.4 47.5 0.040 0.004 0.005 M070800200048 36.4 63.0 0.068 0.004 0.008 M070800200049 36.4 78.4 0.093 0.005 0.011 M070800200050 36.4 93.5 0.079 0.004 0.009 M070800200051 36.4 108.5 0.067 0.003 0.008 M070800200052 36.4 123.1 0.075 0.004 0.009 M070800200053 36.4 137.5 0.052 0.004 0.006 M070800200054 38.8 47.5 0.033 0.004 0.004 M070800200055 38.8 63.1 0.059 0.004 0.007 M070800200056 38.8 78.4 0.071 0.005 0.008 M070800200057 38.8 93.5 0.073 0.004 0.009 M070800200058 38.8 108.4 0.074 0.004 0.009 M070800200059 38.8 123.0 0.058 0.004 0.007 M070800200060 38.8 137.5 0.041 0.004 0.005 M070800200061 40.7 47.5 0.037 0.004 0.004 M070800200062 40.7 63.0 0.047 0.004 0.006 M070800200063 40.7 78.4 0.064 0.004 0.007 M070800200064 40.7 93.5 0.057 0.004 0.007 M070800200065 40.7 108.4 0.061 0.003 0.007 M070800200066 40.7 123.0 0.047 0.003 0.006 M070800200067 40.7 137.5 0.035 0.003 0.004 M070800200068 51.4 31.0 0.013 0.004 0.001 M070800200069 51.4 45.9 0.027 0.005 0.003 M070800200070 51.4 62.1 0.031 0.004 0.003 M070800200071 51.4 77.0 0.035 0.005 0.003 M070800200072 51.4 92.1 0.033 0.006 0.005 M070800200073 51.4 108.3 0.035 0.006 0.003 M070800200074 51.4 123.1 0.024 0.004 0.002 M070800200075 53.6 31.0 0.011 0.003 0.001 M070800200076 53.6 45.9 0.022 0.005 0.002 M070800200077 53.6 62.1 0.037 0.004 0.004 M070800200078 53.6 77.0 0.029 0.004 0.003 M070800200079 53.6 92.1 0.026 0.005 0.004 M070800200080 53.6 108.3 0.029 0.005 0.003 M070800200081 53.6 123.1 0.023 0.003 0.002 M070800200082 56.0 31.0 0.012 0.004 0.001 M070800200083 56.0 45.9 0.019 0.004 0.002 M070800200084 56.0 62.1 0.035 0.004 0.003 M070800200085 56.0 77.0 0.034 0.004 0.003 M070800200086 56.0 92.1 0.030 0.005 0.004 M070800200087 56.0 108.3 0.022 0.006 0.002 M070800200088 56.0 123.1 0.022 0.003 0.002 M070800200089 58.4 31.0 0.014 0.003 0.001 M070800200090 58.4 45.9 0.019 0.004 0.002 M070800200091 58.4 62.1 0.026 0.004 0.002 M070800200092 58.4 77.0 0.030 0.004 0.002 M070800200093 58.4 92.1 0.026 0.005 0.004 M070800200094 58.4 108.3 0.022 0.005 0.002 M070800200095 58.4 123.2 0.017 0.003 0.003 M070800200096 63.6 31.0 0.009 0.003 0.001 M070800200097 63.6 45.9 0.012 0.004 0.001 M070800200098 63.6 62.1 0.020 0.003 0.002 M070800200099 63.6 77.0 0.015 0.003 0.001 M070800200100 63.6 92.1 0.017 0.004 0.002 M070800200101 63.6 108.3 0.019 0.004 0.002 M070800200102 63.6 123.1 0.013 0.004 0.001 M070800200103 68.5 31.0 0.008 0.002 0.001 M070800200104 68.5 45.9 0.014 0.003 0.001 M070800200105 68.5 62.1 0.020 0.002 0.002 M070800200106 68.5 77.0 0.022 0.002 0.002 M070800200107 68.5 92.1 0.018 0.003 0.003 M070800200108 68.5 108.3 0.014 0.003 0.002 M070800200109 68.5 123.3 0.008 0.002 0.001 M070800200110 ENDDATA 99 0 M070800200111 ENDSUBENT 110 0 M070800299999 NOSUBENT M0708003 20210620 M113M070800300001 NOSUBENT M0708004 20210620 M113M070800400001 NOSUBENT M0708005 20210620 M113M070800500001 NOSUBENT M0708006 20210620 M113M070800600001 NOSUBENT M0708007 20210620 M113M070800700001 NOSUBENT M0708008 20210620 M113M070800800001 NOSUBENT M0708009 20210620 M113M070800900001 NOSUBENT M0708010 20210620 M113M070801000001 NOSUBENT M0708011 20210620 M113M070801100001 NOSUBENT M0708012 20210620 M113M070801200001 NOSUBENT M0708013 20210620 M113M070801300001 NOSUBENT M0708014 20210620 M113M070801400001 NOSUBENT M0708015 20210620 M113M070801500001 SUBENT M0708016 20210620 M113M070801600001 BIB 3 6 M070801600002 REACTION (2-HE-4(G,N)2-HE-3,,SIG) M070801600003 Angle-integrated cross section. M070801600004 STATUS (TABLE) Data from Table VI of M070801600005 Phys.Rev.,C75(2007)014007. M070801600006 HISTORY (20210620A) Corrected by SD and VV: STATUS, accuracy M070801600007 of data presentation revised according to the table. M070801600008 ENDBIB 6 0 M070801600009 NOCOMMON 0 0 M070801600010 DATA 4 14 M070801600011 EN DATA ERR-S ERR-SYS M070801600012 MEV MB MB MB M070801600013 24.6 1.310 0.134 0.289 M070801600014 26.7 1.610 0.064 0.287 M070801600015 28.9 1.397 0.049 0.198 M070801600016 31.1 1.072 0.038 0.131 M070801600017 34.6 0.786 0.034 0.092 M070801600018 36.4 0.729 0.035 0.085 M070801600019 38.8 0.635 0.033 0.075 M070801600020 40.7 0.542 0.031 0.064 M070801600021 51.4 0.314 0.046 0.003 M070801600022 53.6 0.287 0.039 0.003 M070801600023 56.0 0.284 0.038 0.003 M070801600024 58.4 0.243 0.037 0.003 M070801600025 63.6 0.170 0.036 0.002 M070801600026 68.5 0.158 0.019 0.002 M070801600027 ENDDATA 16 0 M070801600028 ENDSUBENT 27 0 M070801699999 SUBENT M0708017 20210620 M113M070801700001 BIB 3 8 M070801700002 REACTION (2-HE-4(G,N)2-HE-3,,DA,,LEG/RS) M070801700003 STATUS (DEP,M0708016) Cr.sect. 4PiA0. M070801700004 (TABLE) Data from Table V of M070801700005 Phys.Rev.,C75(2007)014007. M070801700006 HISTORY (20210620A) Corrected by SD and VV: STATUS. M070801700007 (20210620A) Corrected by SD and VV: SF8=LEG/RSD -> M070801700008 LEG/RS in REACTION code, STATUS added, values for A0 M070801700009 deleted from the DATA, NUMBER-CM. M070801700010 ENDBIB 8 0 M070801700011 NOCOMMON 0 0 M070801700012 DATA 5 56 M070801700013 NUMBER-CM EN DATA-CM ERR-S ERR-SYS M070801700014 NO-DIM MEV NO-DIM NO-DIM NO-DIM M070801700015 1. 24.6 0.041 0.108 0.225 M070801700016 1. 26.7 -0.311 0.032 0.103 M070801700017 1. 28.9 -0.229 0.027 0.079 M070801700018 1. 31.1 -0.200 0.026 0.088 M070801700019 1. 34.6 -0.155 0.037 0.061 M070801700020 1. 36.4 -0.062 0.034 0.062 M070801700021 1. 38.8 -0.115 0.042 0.063 M070801700022 1. 40.7 -0.048 0.044 0.081 M070801700023 1. 51.4 0.097 0.097 0.067 M070801700024 1. 53.6 0.130 0.087 0.075 M070801700025 1. 56.0 0.176 0.089 0.064 M070801700026 1. 58.4 0.227 0.102 0.083 M070801700027 1. 63.6 0.070 0.151 0.077 M070801700028 1. 68.5 0.422 0.103 0.086 M070801700029 2. 24.6 -0.936 0.134 0.331 M070801700030 2. 26.7 -0.884 0.044 0.123 M070801700031 2. 28.9 -0.830 0.037 0.095 M070801700032 2. 31.1 -0.762 0.036 0.054 M070801700033 2. 34.6 -0.992 0.050 0.085 M070801700034 2. 36.4 -0.864 0.047 0.081 M070801700035 2. 38.8 -0.997 0.059 0.088 M070801700036 2. 40.7 -0.902 0.061 0.073 M070801700037 2. 51.4 -0.854 0.138 0.073 M070801700038 2. 53.6 -0.794 0.121 0.064 M070801700039 2. 56.0 -0.914 0.128 0.064 M070801700040 2. 58.4 -0.856 0.139 0.069 M070801700041 2. 63.6 -0.687 0.186 0.059 M070801700042 2. 68.5 -1.042 0.135 0.073 M070801700043 3. 24.6 -0.041 0.108 0.225 M070801700044 3. 26.7 0.311 0.032 0.103 M070801700045 3. 28.9 0.229 0.027 0.079 M070801700046 3. 31.1 0.200 0.026 0.088 M070801700047 3. 34.6 0.155 0.037 0.061 M070801700048 3. 36.4 0.062 0.034 0.062 M070801700049 3. 38.8 0.115 0.042 0.063 M070801700050 3. 40.7 0.048 0.044 0.081 M070801700051 3. 51.4 -0.097 0.097 0.067 M070801700052 3. 53.6 -0.130 0.087 0.075 M070801700053 3. 56.0 -0.176 0.089 0.064 M070801700054 3. 58.4 -0.227 0.102 0.083 M070801700055 3. 63.6 -0.070 0.151 0.077 M070801700056 3. 68.5 -0.422 0.103 0.086 M070801700057 4. 24.6 -0.064 0.134 0.331 M070801700058 4. 26.7 -0.116 0.044 0.123 M070801700059 4. 28.9 -0.170 0.037 0.095 M070801700060 4. 31.1 -0.238 0.036 0.054 M070801700061 4. 34.6 -0.008 0.050 0.085 M070801700062 4. 36.4 -0.136 0.047 0.081 M070801700063 4. 38.8 -0.013 0.059 0.088 M070801700064 4. 40.7 -0.098 0.061 0.073 M070801700065 4. 51.4 -0.146 0.138 0.073 M070801700066 4. 53.6 -0.206 0.121 0.064 M070801700067 4. 56.0 -0.086 0.128 0.064 M070801700068 4. 58.4 -0.144 0.139 0.069 M070801700069 4. 63.6 -0.313 0.186 0.059 M070801700070 4. 68.5 0.042 0.135 0.073 M070801700071 ENDDATA 58 0 M070801700072 ENDSUBENT 71 0 M070801799999 ENDENTRY 17 0 M070899999999