ENTRY 14469 20220822 15001446900000001 SUBENT 14469001 20220822 15001446900100001 BIB 9 51 1446900100002 TITLE Measurement of the neutron-capture cross section of 1446900100003 76Ge and 74Ge below 15MeV and its relevance to 1446900100004 neutrinoless double beta decay searches of 76Ge 1446900100005 AUTHOR (M.Bhike,B.Fallin,Krishichayan,W.Tornow) 1446900100006 INSTITUTE (1USATNL,1USADKE) 1446900100007 REFERENCE (J,PL/B,741,150,2015) 1446900100008 #doi:10.1016/j.physletb.2014.12.004 1446900100009 (J,EPJ/CS,93,03001,2015) Preliminary results. 1446900100010 #doi:10.1051/epjconf/20159303001 1446900100011 FACILITY (VDGT,1USATNL) Irradiations were carried out in the 1446900100012 10-MV FN Tandem Van de Graaff Accelerator at the 1446900100013 Triangle Universities Nuclear Laboratory 1446900100014 SAMPLE (32-GE-76,ENR=0.86) 1446900100015 (32-GE-74,ENR=0.14) 1446900100016 A metallic germanium slab 10mm x 10mm in area and 1446900100017 with a thickness of 2 mm (resulting in a mass of 1446900100018 about 1.5 g) with the same isotopic composition as 1446900100019 that of the enriched high-purity germanium detectors 1446900100020 was used as target. The germanium slab was sandwiched 1446900100021 between either indium or gold foils of the same area 1446900100022 and thickness of 0.125mm and 0.01mm, respectively. 1446900100023 detector material with isotopic abundance of 1446900100024 approximately 86% 76Ge and 14% 74Ge.The isotopic 1446900100025 composition is the same as that of the enriched HPGe 1446900100026 detectors used by the GERDA and Majorana 1446900100027 Collaborations. 1446900100028 METHOD (ACTIV) 1446900100029 ERR-ANALYS (ERR-1,0.4,35.,U) Sample counting statistics 1446900100030 (ERR-2,0.1,4.7,U) Monitor statistical uncertainty 1446900100031 (ERR-3,1.0,4.1) Reference cross section 1446900100032 (ERR-4,1.,6.) Sample detector efficiency 1446900100033 (ERR-5,1.,5.) Monitor detector efficiency 1446900100034 (ERR-6,,0.2) Source geometry and g-ray selfabsorption 1446900100035 of the Ge sample 1446900100036 (ERR-7,,1.) Source geometry and g-ray selfabsorption 1446900100037 of the monitor 1446900100038 (ERR-8,,0.1) Monitor half-life 1446900100039 (ERR-9,,1.) Sample half-life 1446900100040 (ERR-10,4.8,10.7) Sample gamma ray intensity 1446900100041 (ERR-11,1.4,4.8) Monitor gamma ray intensity 1446900100042 (ERR-12,,1.) Monitor neutron flux fluctuation 1446900100043 (ERR-13,,1.) Sample neutron flux fluctuation 1446900100044 (ERR-14,,1.) Sample low energy neutron contribution 1446900100045 (ERR-15,,1.2) Monitor low energy neutron contribution 1446900100046 (ERR-T) Total uncertainty. Total uncertainty was 1446900100047 obtained by taking the square root of the sum of 1446900100048 the squares of the individual uncertainties. 1446900100049 HISTORY (20170601C) Compiled by S.H. 1446900100050 (20210223U) BP: Added conference proceedings reference.1446900100051 (20220703A) OS. 1 data point each moved from subs. 1446900100052 3 to 2, 6 to 5, and 8 to 7 1446900100053 ENDBIB 51 0 1446900100054 NOCOMMON 0 0 1446900100055 ENDSUBENT 54 0 1446900199999 SUBENT 14469002 20220822 15001446900200001 BIB 7 18 1446900200002 REACTION (32-GE-76(N,G)32-GE-77-G,M+,SIG) 1446900200003 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900200004 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900200005 using a tritiated titanium target. 1446900200006 cell. The gas pressure was adjusted to 4 atm to 1446900200007 provide the desired neutron energy spread in the 1446900200008 energy range investigated. Typically the neutron 1446900200009 energy spread was +-150 keV at 0 deg. 1446900200010 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900200011 DECAY-DATA (32-GE-77-G,11.211HR,DG,264.450,0.533, 1446900200012 DG,211.03,0.300, 1446900200013 DG,215.51,0.279, 1446900200014 DG,416.35,0.227, 1446900200015 DG,367.49,0.145) 1446900200016 MONITOR (49-IN-115(N,G)49-IN-116-M1+M2,,SIG) 1446900200017 DECAY-MON (49-IN-116-M1,54.29MIN,DG,1293.56,0.848) 1446900200018 HISTORY (20220703A) 2nd data point moved from sub.3 1446900200019 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900200020 ENDBIB 18 0 1446900200021 NOCOMMON 0 0 1446900200022 DATA 6 2 1446900200023 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900200024 MEV MEV MB MB MB MB 1446900200025 0.38 0.11 6.68 0.44 158.98 5.92 1446900200026 0.86 0.11 2.8 0.22 166.44 1.07 1446900200027 ENDDATA 4 0 1446900200028 ENDSUBENT 27 0 1446900299999 SUBENT 14469003 20220822 15001446900300001 BIB 7 22 1446900300002 REACTION (32-GE-76(N,G)32-GE-77-G,M+,SIG) 1446900300003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900300004 DECAY-DATA (32-GE-77-G,11.211HR,DG,264.450,0.533, 1446900300005 DG,211.03,0.300, 1446900300006 DG,215.51,0.279, 1446900300007 DG,416.35,0.227, 1446900300008 DG,367.49,0.145) 1446900300009 MONITOR (49-IN-115(N,INL)49-IN-115-M,,SIG) 1446900300010 DECAY-MON (49-IN-115-M,4.486HR,DG,336.241,0.458) 1446900300011 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900300012 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900300013 using a tritiated titanium target. 1446900300014 cell. The gas pressure was adjusted to 4 atm to 1446900300015 provide the desired neutron energy spread in the 1446900300016 energy range investigated. Typically the neutron 1446900300017 energy spread was +-150 keV at 0 deg. 1446900300018 (D-D) D+D reaction was used to produce neutrons of 1446900300019 energy between 4.39 and 7.36 MeV employing a deuterium 1446900300020 gas cell pressurized to 3atm of high-purity deuterium 1446900300021 gas. 1446900300022 HISTORY (20220703A) First data point moved to sub.2 1446900300023 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900300024 ENDBIB 22 0 1446900300025 NOCOMMON 0 0 1446900300026 DATA 6 8 1446900300027 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900300028 MEV MEV MB MB MB MB 1446900300029 1.32 0.11 2.3 0.17 134.17 3.22 1446900300030 1.87 0.11 1.75 0.31 242.66 5.82 1446900300031 2.77 0.13 1.89 0.36 348.99 8.19 1446900300032 3.39 0.15 1.22 0.22 336.02 7.89 1446900300033 4.39 0.33 0.88 0.07 316.86 7.98 1446900300034 5.33 0.35 0.61 0.09 335.39 8.72 1446900300035 6.64 0.33 0.44 0.08 338.18 12.01 1446900300036 7.36 0.29 0.37 0.06 320.78 11.39 1446900300037 ENDDATA 10 0 1446900300038 ENDSUBENT 37 0 1446900399999 SUBENT 14469004 20170601 14331446900400001 BIB 6 14 1446900400002 REACTION (32-GE-76(N,G)32-GE-77-G,M+,SIG) 1446900400003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900400004 DECAY-DATA (32-GE-77-G,11.211HR,DG,264.450,0.533, 1446900400005 DG,211.03,0.300, 1446900400006 DG,215.51,0.279, 1446900400007 DG,416.35,0.227, 1446900400008 DG,367.49,0.145) 1446900400009 MONITOR (79-AU-197(N,2N)79-AU-196,,SIG) 1446900400010 DECAY-MON (79-AU-196-G,6.1669D,DG,355.73,0.87) 1446900400011 INC-SOURCE (D-T) The 3H(d,n)4He reaction (Q = 17.59 MeV) was 1446900400012 employed for En=14.8 MeV, using tritiated target 1446900400013 assembly. It consisted of a 2-mg/cm2-thick titanium 1446900400014 layer loaded with 2.5 Ci of tritium and evaporated 1446900400015 onto a 0.4-mm-thick copper disk 1446900400016 ENDBIB 14 0 1446900400017 NOCOMMON 0 0 1446900400018 DATA 6 1 1446900400019 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900400020 MEV MEV MB MB MB MB 1446900400021 14.81 0.08 0.62 0.04 2164.39 22.83 1446900400022 ENDDATA 3 0 1446900400023 ENDSUBENT 22 0 1446900499999 SUBENT 14469005 20220822 15001446900500001 BIB 7 14 1446900500002 REACTION (32-GE-76(N,G)32-GE-77-M,,SIG) 1446900500003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900500004 DECAY-DATA (32-GE-77-M,53.7SEC,DG,159.7,0.103) 1446900500005 MONITOR (49-IN-115(N,G)49-IN-116-M1+M2,,SIG) 1446900500006 DECAY-MON (49-IN-116-M1,54.29MIN,DG,1293.56,0.848) 1446900500007 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900500008 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900500009 using a tritiated titanium target. 1446900500010 cell. The gas pressure was adjusted to 4 atm to 1446900500011 provide the desired neutron energy spread in the 1446900500012 energy range investigated. Typically the neutron 1446900500013 energy spread was +-150 keV at 0 deg. 1446900500014 HISTORY (20220703A) 2nd data point moved from sub.6 1446900500015 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900500016 ENDBIB 14 0 1446900500017 NOCOMMON 0 0 1446900500018 DATA 6 2 1446900500019 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900500020 MEV MEV MB MB MB MB 1446900500021 0.38 0.11 4.93 0.36 158.98 5.92 1446900500022 0.86 0.11 2.94 0.31 166.44 1.07 1446900500023 ENDDATA 4 0 1446900500024 ENDSUBENT 23 0 1446900599999 SUBENT 14469006 20220822 15001446900600001 BIB 7 18 1446900600002 REACTION (32-GE-76(N,G)32-GE-77-M,,SIG) 1446900600003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900600004 DECAY-DATA (32-GE-77-M,53.7SEC,DG,159.7,0.103) 1446900600005 MONITOR (49-IN-115(N,INL)49-IN-115-M,,SIG) 1446900600006 DECAY-MON (49-IN-115-M,4.486HR,DG,336.241,0.458) 1446900600007 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900600008 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900600009 using a tritiated titanium target. 1446900600010 cell. The gas pressure was adjusted to 4 atm to 1446900600011 provide the desired neutron energy spread in the 1446900600012 energy range investigated. Typically the neutron 1446900600013 energy spread was +-150 keV at 0 deg. 1446900600014 (D-D) D+D reaction was used to produce neutrons of 1446900600015 energy between 4.39 and 7.36 MeV employing a deuterium 1446900600016 gas cell pressurized to 3atm of high-purity deuterium 1446900600017 gas. 1446900600018 HISTORY (20220703A) First data point moved to sub.5 1446900600019 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900600020 ENDBIB 18 0 1446900600021 NOCOMMON 0 0 1446900600022 DATA 6 7 1446900600023 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900600024 MEV MEV MB MB MB MB 1446900600025 1.32 0.11 1.57 0.15 134.17 3.22 1446900600026 1.87 0.11 1.28 0.12 242.66 5.82 1446900600027 2.77 0.13 1.26 0.25 348.99 8.19 1446900600028 4.39 0.33 0.67 0.08 316.86 7.98 1446900600029 5.33 0.35 0.37 0.05 335.39 8.72 1446900600030 6.64 0.33 0.32 0.04 338.18 12.01 1446900600031 7.36 0.29 0.27 0.05 320.78 11.39 1446900600032 ENDDATA 9 0 1446900600033 ENDSUBENT 32 0 1446900699999 SUBENT 14469007 20220822 15001446900700001 BIB 8 24 1446900700002 REACTION (32-GE-76(N,G)32-GE-77-G,,SIG) 1446900700003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900700004 (DEP,14469002) 1446900700005 (DEP,14469005) 1446900700006 ANALYSIS The cross section for the ground state was obtained 1446900700007 from the relation 1446900700008 sig(g) = "apparent" total cs - 0.19 * sig(m) 1446900700009 (p.152, bottom of left column) 1446900700010 DECAY-DATA (32-GE-77-G,11.211HR,DG,264.450,0.533, 1446900700011 DG,211.03,0.300, 1446900700012 DG,215.51,0.279, 1446900700013 DG,416.35,0.227, 1446900700014 DG,367.49,0.145) 1446900700015 MONITOR (49-IN-115(N,G)49-IN-116-M1+M2,,SIG) 1446900700016 DECAY-MON (49-IN-116-M1,54.29MIN,DG,1293.56,0.848) 1446900700017 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900700018 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900700019 using a tritiated titanium target. 1446900700020 cell. The gas pressure was adjusted to 4 atm to 1446900700021 provide the desired neutron energy spread in the 1446900700022 energy range investigated. Typically the neutron 1446900700023 energy spread was +-150 keV at 0 deg. 1446900700024 HISTORY (20220703A) 2nd data point moved from sub.8 1446900700025 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900700026 ENDBIB 24 0 1446900700027 NOCOMMON 0 0 1446900700028 DATA 6 2 1446900700029 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900700030 MEV MEV MB MB MB MB 1446900700031 0.38 0.11 5.75 0.57 158.98 5.92 1446900700032 0.86 0.11 2.24 0.38 166.44 1.07 1446900700033 ENDDATA 4 0 1446900700034 ENDSUBENT 33 0 1446900799999 SUBENT 14469008 20220822 15001446900800001 BIB 8 28 1446900800002 REACTION (32-GE-76(N,G)32-GE-77-G,,SIG) 1446900800003 STATUS (TABLE) Data taken from tab. 3 of the reference 1446900800004 (DEP,14469003) 1446900800005 (DEP,14469006) 1446900800006 ANALYSIS The cross section for the ground state was obtained 1446900800007 from the relation 1446900800008 sig(g) = "apparent" total cs - 0.19 * sig(m) 1446900800009 (p.152, bottom of left column) 1446900800010 DECAY-DATA (32-GE-77-G,11.211HR,DG,264.450,0.533, 1446900800011 DG,211.03,0.300, 1446900800012 DG,215.51,0.279, 1446900800013 DG,416.35,0.227, 1446900800014 DG,367.49,0.145) 1446900800015 MONITOR (49-IN-115(N,INL)49-IN-115-M,,SIG) 1446900800016 DECAY-MON (49-IN-115-M,4.486HR,DG,336.241,0.458) 1446900800017 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900800018 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900800019 using a tritiated titanium target. 1446900800020 cell. The gas pressure was adjusted to 4 atm to 1446900800021 provide the desired neutron energy spread in the 1446900800022 energy range investigated. Typically the neutron 1446900800023 energy spread was +-150 keV at 0 deg. 1446900800024 (D-D) D+D reaction was used to produce neutrons of 1446900800025 energy between 4.39 and 7.36 MeV employing a deuterium 1446900800026 gas cell pressurized to 3atm of high-purity deuterium 1446900800027 gas. 1446900800028 HISTORY (20220703A) First data point moved to sub.7 1446900800029 ("(a)" at 0.86 MeV in Table 3 should read "(b)") 1446900800030 ENDBIB 28 0 1446900800031 NOCOMMON 0 0 1446900800032 DATA 6 7 1446900800033 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1446900800034 MEV MEV MB MB MB MB 1446900800035 1.32 0.11 2. 0.23 134.17 3.22 1446900800036 1.87 0.11 1.51 0.33 242.66 5.82 1446900800037 2.77 0.13 1.65 0.44 348.99 8.19 1446900800038 4.39 0.33 0.75 0.11 316.86 7.98 1446900800039 5.33 0.35 0.54 0.1 335.39 8.72 1446900800040 6.64 0.33 0.38 0.09 338.18 12.01 1446900800041 7.36 0.29 0.32 0.07 320.78 11.39 1446900800042 ENDDATA 9 0 1446900800043 ENDSUBENT 42 0 1446900899999 SUBENT 14469009 20170601 14331446900900001 BIB 4 17 1446900900002 REACTION (32-GE-74(N,G)32-GE-75,,SIG) 1446900900003 STATUS (TABLE) Data taken from tab. 5 of the reference 1446900900004 (DEP,14469010) 1446900900005 (DEP,14469011) 1446900900006 DECAY-DATA (32-GE-75-G,82.78MIN,DG,264.6,0.114, 1446900900007 DG,198.6,0.0119) 1446900900008 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446900900009 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446900900010 using a tritiated titanium target. 1446900900011 cell. The gas pressure was adjusted to 4 atm to 1446900900012 provide the desired neutron energy spread in the 1446900900013 energy range investigated. Typically the neutron 1446900900014 energy spread was +-150 keV at 0 deg. 1446900900015 (D-D) D+D reaction was used to produce neutrons of 1446900900016 energy between 4.39 and 7.36 MeV employing a deuterium 1446900900017 gas cell pressurized to 3atm of high-purity deuterium 1446900900018 gas. 1446900900019 ENDBIB 17 0 1446900900020 NOCOMMON 0 0 1446900900021 DATA 4 10 1446900900022 EN EN-RSL DATA ERR-T 1446900900023 MEV MEV MB MB 1446900900024 0.38 0.11 20.29 2.27 1446900900025 0.86 0.11 11.83 1.45 1446900900026 1.32 0.11 8.48 0.54 1446900900027 1.87 0.11 6.19 1.43 1446900900028 2.77 0.13 6.26 1.15 1446900900029 3.39 0.15 3.60 0.63 1446900900030 4.39 0.33 2.51 0.42 1446900900031 5.33 0.35 1.62 0.28 1446900900032 6.64 0.33 1.23 0.34 1446900900033 7.36 0.29 1.21 0.27 1446900900034 ENDDATA 12 0 1446900900035 ENDSUBENT 34 0 1446900999999 SUBENT 14469010 20170601 14331446901000001 BIB 4 14 1446901000002 REACTION (32-GE-74(N,G)32-GE-75-M,,SIG) 1446901000003 STATUS (TABLE) Data taken from tab. 5 of the reference 1446901000004 DECAY-DATA (32-GE-75-M,47.7SEC,DG,139.68,0.3951) 1446901000005 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446901000006 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446901000007 using a tritiated titanium target. 1446901000008 cell. The gas pressure was adjusted to 4 atm to 1446901000009 provide the desired neutron energy spread in the 1446901000010 energy range investigated. Typically the neutron 1446901000011 energy spread was +-150 keV at 0 deg. 1446901000012 (D-D) D+D reaction was used to produce neutrons of 1446901000013 energy between 4.39 and 7.36 MeV employing a deuterium 1446901000014 gas cell pressurized to 3atm of high-purity deuterium 1446901000015 gas. 1446901000016 ENDBIB 14 0 1446901000017 NOCOMMON 0 0 1446901000018 DATA 4 9 1446901000019 EN EN-RSL DATA ERR-T 1446901000020 MEV MEV MB MB 1446901000021 0.38 0.11 10.16 0.36 1446901000022 0.86 0.11 6.96 0.44 1446901000023 1.32 0.11 4.35 0.27 1446901000024 1.87 0.11 3.85 0.24 1446901000025 2.77 0.13 3.74 0.62 1446901000026 4.39 0.33 2.16 0.18 1446901000027 5.33 0.35 1.35 0.16 1446901000028 6.64 0.33 1.11 0.13 1446901000029 7.36 0.29 1.16 0.10 1446901000030 ENDDATA 11 0 1446901000031 ENDSUBENT 30 0 1446901099999 SUBENT 14469011 20170601 14331446901100001 BIB 4 15 1446901100002 REACTION (32-GE-74(N,G)32-GE-75-G,,SIG) 1446901100003 STATUS (TABLE) Data taken from tab. 5 of the reference 1446901100004 DECAY-DATA (32-GE-75-G,82.78MIN,DG,264.6,0.114, 1446901100005 DG,198.6,0.0119) 1446901100006 INC-SOURCE (P-T) The 3H(p,n)3He reaction was used to produce 1446901100007 quasimonoenergetic neutrons between 0.4 and 3.39 MeV 1446901100008 using a tritiated titanium target. 1446901100009 cell. The gas pressure was adjusted to 4 atm to 1446901100010 provide the desired neutron energy spread in the 1446901100011 energy range investigated. Typically the neutron 1446901100012 energy spread was +-150 keV at 0 deg. 1446901100013 (D-D) D+D reaction was used to produce neutrons of 1446901100014 energy between 4.39 and 7.36 MeV employing a deuterium 1446901100015 gas cell pressurized to 3atm of high-purity deuterium 1446901100016 gas. 1446901100017 ENDBIB 15 0 1446901100018 NOCOMMON 0 0 1446901100019 DATA 4 9 1446901100020 EN EN-RSL DATA ERR-T 1446901100021 MEV MEV MB MB 1446901100022 0.38 0.11 10.13 2.30 1446901100023 0.86 0.11 4.87 1.06 1446901100024 1.32 0.11 4.13 0.57 1446901100025 1.87 0.11 2.34 0.88 1446901100026 2.77 0.13 2.52 0.88 1446901100027 4.39 0.33 0.35 0.07 1446901100028 5.33 0.35 0.27 0.06 1446901100029 6.64 0.33 0.12 0.04 1446901100030 7.36 0.29 0.05 0.01 1446901100031 ENDDATA 11 0 1446901100032 ENDSUBENT 31 0 1446901199999 ENDENTRY 11 0 1446999999999