ENTRY 32781 20230103 3278100000001 SUBENT 32781001 20230103 20231011 3278100100001 BIB 16 69 3278100100002 TITLE Measurement of cross sections and isomeric 3278100100003 cross-section ratios for the (n,2n) reactions on 3278100100004 196,198Hg at energies between 13 and 15 MeV 3278100100005 AUTHOR (Junhua Luo, Li Jiang, Long He) 3278100100006 INSTITUTE (3CPRHXU,3CPRNPC) 3278100100007 REFERENCE (J,PR/C,98,014619,2018) 3278100100008 #doi:10.1103/PhysRevC.98.014619 3278100100009 FACILITY (NGEN,3CPRNPC) Pd-300 Neutron Generator 3278100100010 INC-SOURCE (D-T) 3278100100011 SAMPLE The HgO powder (99.5% pure, natural isotopic 3278100100012 composition) was placed in a polymethyl methacrylate 3278100100013 sample box. Three samples with a diameter of 20 mm 3278100100014 and six niobium foil monitors (of 99.99% purity) with 3278100100015 identical diameters were prepared for irradiation. 3278100100016 The HgO samples were 0.0537 cm, 0.0538 cm, and 3278100100017 0.0559 cm thick. 3278100100018 DETECTOR (HPGE) High-purity germanium (HPGe) gamma-ray 3278100100019 spectroscopy (about 68% relative efficiency, 1.69 3278100100020 keV resolution at 1332.5 keV of 60Co). The detector 3278100100021 was coupled with a digital gamma spectrometry system 3278100100022 (ORTEC, model GEM 60P) and Maestro data acquisition 3278100100023 software. The distance from sample to detector end 3278100100024 cap was 0 to 8 cm. 3278100100025 METHOD (ACTIV) A stack of Nb-HgO-Nb was assembled from these 3278100100026 three samples and mounted at 0, 90, and 135 deg 3278100100027 relative to the beam direction. The samples were 3278100100028 wrapped in a cadmium foil in order to reduce the 3278100100029 contribution of thermal and epithermal effects. 3278100100030 Cooling time is 18 hours. 3278100100031 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3278100100032 DECAY-MON (41-NB-92-M,10.15D,DG,934.44,0.9915) 3278100100033 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,,1990) 3278100100034 CORRECTION F was the total correction factor of the activity, 3278100100035 F=fs*fc*fp. fs, fc, and fp are the correction 3278100100036 factors for the self-absorption of the sample at a 3278100100037 given gamma energy, the coincidence sum effect of 3278100100038 cascade gamma rays in the investigated nuclide, and 3278100100039 the attenuation of gamma rays in polymethyl 3278100100040 methacrylate (for niobium foil, fp = 1). 3278100100041 Correction factors for the self-absorption: 3278100100042 ****************************************************** 3278100100043 Samples thickness h (cm) 3278100100044 Gamma-ray energy (keV)******************************** 3278100100045 0.0537 0.0538 0.0559 3278100100046 ****************************************************** 3278100100047 133.98 2.051 2.054 2.103 3278100100048 191.364 1.343 1.344 1.358 3278100100049 387.87 1.071 1.071 1.074 3278100100050 560.27 1.040 1.040 1.041 3278100100051 585.13 1.037 1.037 1.039 3278100100052 599.66 1.036 1.036 1.037 3278100100053 779.8 1.027 1.027 1.028 3278100100054 ****************************************************** 3278100100055 ERR-ANALYS (ERR-T) The total uncertainty 5.2-14.6%. 3278100100056 (ERR-S,0.04,2.9) Counting statistics 0.04-2.9% 3278100100057 (ERR-1,2.0,3.0) Photopeak detection efficiency 2.0-3.0%3278100100058 (ERR-2,0.9,12.25) Relative gamma-ray intensity 0.9- 3278100100059 12.25% 3278100100060 (ERR-3,0.08,1.9) Half-life 0.08-1.9% 3278100100061 (ERR-4,0.,0.1) Sample weight <0.1% 3278100100062 (ERR-5,0.,0.1) Timing <0.1% 3278100100063 (ERR-6) Self-absorption of gamma ray about 0.5% 3278100100064 (MONIT-ERR) Cross section of the monitor reaction 1.1- 3278100100065 1.5% 3278100100066 STATUS (TABLE) TABLE IV and text (p6) of Phys.Rev.C98(2018) 3278100100067 014619. 3278100100068 HISTORY (20200218C) Compiled by Xi Tao (CNDC) 3278100100069 (20220830A) VT. Revision in 005 3278100100070 (20230103A) VT+On. Revision in 004 3278100100071 ENDBIB 69 0 3278100100072 COMMON 1 3 3278100100073 ERR-6 3278100100074 PER-CENT 3278100100075 0.5 3278100100076 ENDCOMMON 3 0 3278100100077 ENDSUBENT 76 0 3278100199999 SUBENT 32781002 20200218 31953278100200001 BIB 4 5 3278100200002 REACTION (80-HG-196(N,2N)80-HG-195-M,,SIG) 3278100200003 DECAY-DATA ((1.)80-HG-195-M,41.6HR,DG,387.87,0.0218) 3278100200004 ((2.)80-HG-195-M,41.6HR,DG,560.27,0.071) 3278100200005 SAMPLE (80-HG-196,NAT=0.0015) 3278100200006 ERR-ANALYS (ERR-7) Isotopic abundance 6.6% 3278100200007 ENDBIB 5 0 3278100200008 COMMON 2 3 3278100200009 EN-ERR ERR-7 3278100200010 MEV PER-CENT 3278100200011 0.2 6.6 3278100200012 ENDCOMMON 3 0 3278100200013 DATA 6 6 3278100200014 EN DATA ERR-T MONIT MONIT-ERR DECAY-FLAG 3278100200015 MEV MB MB MB MB NO-DIM 3278100200016 13.5 967. 101. 457.9 6.8 1.3278100200017 13.5 988. 109. 457.9 6.8 2.3278100200018 14.1 1041. 111. 459.8 6.8 1.3278100200019 14.1 1024. 104. 459.8 6.8 2.3278100200020 14.8 1064. 107. 459.7 5.0 1.3278100200021 14.8 1164. 117. 459.7 5.0 2.3278100200022 ENDDATA 8 0 3278100200023 ENDSUBENT 22 0 3278100299999 SUBENT 32781003 20200218 31953278100300001 BIB 4 6 3278100300002 REACTION (80-HG-196(N,2N)80-HG-195-G,,SIG) 3278100300003 DECAY-DATA ((1.)80-HG-195-G,10.53HR,DG,585.13,0.0204) 3278100300004 ((2.)80-HG-195-G,10.53HR,DG,599.66,0.0183) 3278100300005 ((3.)80-HG-195-G,10.53HR,DG,779.80,0.070) 3278100300006 SAMPLE (80-HG-196,NAT=0.0015) 3278100300007 ERR-ANALYS (ERR-7) Isotopic abundance 6.6% 3278100300008 ENDBIB 6 0 3278100300009 COMMON 2 3 3278100300010 EN-ERR ERR-7 3278100300011 MEV PER-CENT 3278100300012 0.2 6.6 3278100300013 ENDCOMMON 3 0 3278100300014 DATA 6 9 3278100300015 EN DATA ERR-T MONIT MONIT-ERR DECAY-FLAG 3278100300016 MEV MB MB MB MB NO-DIM 3278100300017 13.5 672. 94. 457.9 6.8 1.3278100300018 13.5 679. 99. 457.9 6.8 2.3278100300019 13.5 716. 103. 457.9 6.8 3.3278100300020 14.1 771. 108. 459.8 6.8 1.3278100300021 14.1 701. 100. 459.8 6.8 2.3278100300022 14.1 731. 101. 459.8 6.8 3.3278100300023 14.8 639. 89. 459.7 5.0 1.3278100300024 14.8 710. 100. 459.7 5.0 2.3278100300025 14.8 721. 99. 459.7 5.0 3.3278100300026 ENDDATA 11 0 3278100300027 ENDSUBENT 26 0 3278100399999 SUBENT 32781004 20230103 20231011 3278100400001 BIB 4 11 3278100400002 REACTION 1(80-HG-196(N,2N)80-HG-195-M,,SIG,,AV) 3278100400003 2(80-HG-196(N,2N)80-HG-195-G,,SIG,,AV) 3278100400004 3(80-HG-196(N,2N)80-HG-195,,SIG) 3278100400005 4(80-HG-196(N,2N)80-HG-195-M/G,,SIG/RAT) 3278100400006 ERR-ANALYS (ERR-7) Isotopic abundance 6.6% 3278100400007 STATUS 1(DEP,32781002) 196Hg(n,2n)195mHg cross sections for 3278100400008 2 gamma lines 3278100400009 2(DEP,32781003) 196Hg(n,2n)195mHg cross sections for 3278100400010 3 gamma lines 3278100400011 HISTORY (20230103A) VT+On. DATA: ERR-T 4->DATA 4, 3278100400012 DATA 4->ERR-T 4 swapped 3278100400013 ENDBIB 11 0 3278100400014 COMMON 2 3 3278100400015 EN-ERR ERR-7 3278100400016 MEV PER-CENT 3278100400017 0.2 6.6 3278100400018 ENDCOMMON 3 0 3278100400019 DATA 11 3 3278100400020 EN DATA 1ERR-T 1DATA 2ERR-T 2DATA 33278100400021 ERR-T 3DATA 4ERR-T 4MONIT MONIT-ERR 3278100400022 MEV MB MB MB MB MB 3278100400023 MB NO-DIM NO-DIM MB MB 3278100400024 13.5 977. 74. 688. 57. 1665.3278100400025 131. 1.4 0.2 457.9 6.8 3278100400026 14.1 1032. 76. 733. 59. 1765.3278100400027 135. 1.4 0.2 459.8 6.8 3278100400028 14.8 1110. 79. 686. 55. 1796.3278100400029 134. 1.6 0.2 459.7 5.0 3278100400030 ENDDATA 10 0 3278100400031 ENDSUBENT 30 0 3278100499999 SUBENT 32781005 20220830 32083278100500001 BIB 5 10 3278100500002 REACTION 1(80-HG-198(N,2N)80-HG-197-M,,SIG) 3278100500003 2(80-HG-198(N,2N)80-HG-197-G,,SIG) 3278100500004 3(80-HG-198(N,2N)80-HG-197,,SIG) 3278100500005 4(80-HG-198(N,2N)80-HG-197-M/G,,SIG/RAT) 3278100500006 DECAY-DATA1(80-HG-197-M,23.8HR,DG,133.98,0.335) 3278100500007 2(80-HG-197-G,64.14HR,DG,191.364,0.00608) 3278100500008 SAMPLE (80-HG-198,NAT=0.0997) 3278100500009 ERR-ANALYS (ERR-7) Isotopic abundance 2.0% 3278100500010 HISTORY (20220830A) VT. DATA: ERR-T 4->DATA 4, DATA 4->ERR-T 4 3278100500011 swapped 3278100500012 ENDBIB 10 0 3278100500013 COMMON 2 3 3278100500014 EN-ERR ERR-7 3278100500015 MEV PER-CENT 3278100500016 0.2 2.0 3278100500017 ENDCOMMON 3 0 3278100500018 DATA 11 3 3278100500019 EN DATA 1ERR-T 1DATA 2ERR-T 2DATA 33278100500020 ERR-T 3DATA 4ERR-T 4MONIT MONIT-ERR 3278100500021 MEV MB MB MB MB MB 3278100500022 MB NO-DIM NO-DIM MB MB 3278100500023 13.5 987. 52. 935. 66. 1922.3278100500024 118. 1.1 0.1 457.9 6.8 3278100500025 14.1 1053. 55. 882. 67. 1935.3278100500026 122. 1.2 0.1 459.8 6.8 3278100500027 14.8 1169. 60. 830. 71. 1999.3278100500028 131. 1.4 0.1 459.7 5.0 3278100500029 ENDDATA 10 0 3278100500030 ENDSUBENT 29 0 3278100599999 ENDENTRY 5 0 3278199999999