ENTRY 32935 20251204 3293500000001 SUBENT 32935001 20251204 20260228 3293500100001 BIB 13 55 3293500100002 TITLE Cross section determination of 27Al(n,2n)26Al 3293500100003 reaction induced by 14 MeV neutrons uniting with D-T 3293500100004 neutron activation and AMS techniques 3293500100005 AUTHOR (Xianlin Yang, Changlin Lan, Yuting Wei, Yi Zhang, 3293500100006 Gong Jiang, Bo Xie, Yu Liu, Hongtao Shen, Xiaojun Sun)3293500100007 INSTITUTE (3CPRLNZ) 3293500100008 (3CPRCPR) Institute of Geochemistry, Chinese Academy 3293500100009 of Sciences, Guiyang 3293500100010 (3CPRCPR) Guangxi Normal University, Guilin 3293500100011 REFERENCE (J,CNST,35,94,2024) 3293500100012 #doi:10.1007/s41365-024-01451-z 3293500100013 FACILITY (NGEN,3CPRNPC) K-400 neutron generator 3293500100014 INC-SOURCE (D-T) The neutron yield is approximately (3-5)E10 n/s. 3293500100015 The neutrons were produced by a T(d,n)4He reaction 3293500100016 with a D+ beam current of 250 uA. The thickness of 3293500100017 the solid tritium-titanium (T-Ti) target used in the 3293500100018 generator was 2.5 mg/cm2, and the energy of the 3293500100019 incident D+ beam was 300 keV. 3293500100020 SAMPLE High-purity aluminum (0.5 mm, 99.999% purity) foil 3293500100021 was sandwiched between natural zirconium (0.1 mm, 3293500100022 99.5% purity) and niobium (0.1 mm, 99.95% purity) 3293500100023 foils. Four round disk samples with a diameter of 20 3293500100024 mm were placed approximately 5.0 cm away from the 3293500100025 T-Ti target relative to the deuteron beam incident 3293500100026 angles of 0, 30, 60, and 100 deg. One arc shape 3293500100027 sample with 0.5 cm in width and about 4 cm in length 3293500100028 was placed about 3.0 cm away from the T-Ti target and 3293500100029 about 60 to 135 deg relative to the deuterium ion 3293500100030 incident direction. 3293500100031 DETECTOR (SIBAR) An Au-Si surface barrier detector for the 3293500100032 detection of accompanying particles. 3293500100033 (HPGE) The activities of those Nb and Zr samples were 3293500100034 determined using an HPGe gamma-ray detector with a 3293500100035 relative efficiency of 68% and an energy resolution 3293500100036 of 1.82 keV FWHM at 1.33 MeV. 3293500100037 (SPEC) A dedicated accelerator mass spectrometer, the 3293500100038 GYIG 1 MV AMS instrument was used to measure 26Al. 3293500100039 METHOD (ACTIV) Two sets of aluminum samples placed at 3293500100040 different locations were irradiated for 20 h. 3293500100041 (AMS) An ultrasensitive AMS was needed to measure 26Al 3293500100042 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3293500100043 DECAY-MON (41-NB-92-M,10.15D,DG,934.44,0.9915) 3293500100044 ERR-ANALYS (ERR-T) Total uncertainty 3293500100045 (ERR-S,4.9,50.0) Counting statistics of 26Al 3293500100046 (ERR-1) Reproducibility of standard sample 3293500100047 (ERR-2) Counting statistics of 92mNb 3293500100048 (ERR-3) Half-life of 92mNb 3293500100049 (ERR-4) Sample mass 3293500100050 (ERR-5) Neutron flux fluctuation 3293500100051 (ERR-6) Standard sample (26Al/27Al) 3293500100052 (ERR-7) Total correction 3293500100053 (ERR-8) Branching ratio 3293500100054 (ERR-9) Detection efficiency 3293500100055 (MONIT-ERR) Cross section of 93Nb(n,2n)92mNb 3293500100056 HISTORY (20251204C) Jimin Wang 3293500100057 ENDBIB 55 0 3293500100058 COMMON 10 6 3293500100059 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3293500100060 ERR-7 ERR-8 ERR-9 MONIT-ERR 3293500100061 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3293500100062 PER-CENT PER-CENT PER-CENT PER-CENT 3293500100063 1.0 1.0 0.2 0.1 3.0 1.03293500100064 1.0 0.5 3.0 1.5 3293500100065 ENDCOMMON 6 0 3293500100066 ENDSUBENT 65 0 3293500199999 SUBENT 32935002 20251204 20260228 3293500200001 BIB 2 2 3293500200002 REACTION (13-AL-27(N,2N)13-AL-26,,SIG) 3293500200003 STATUS (TABLE,,Xianlin Yang+,J,CNST,35,94,2024) Table 3 3293500200004 ENDBIB 2 0 3293500200005 NOCOMMON 0 0 3293500200006 DATA 4 12 3293500200007 EN EN-ERR DATA ERR-T 3293500200008 MEV MEV MB MB 3293500200009 14.91 0.18 37.20 2.80 3293500200010 14.80 0.16 30.60 2.72 3293500200011 14.51 0.15 19.00 1.92 3293500200012 14.37 0.09 13.79 1.42 3293500200013 14.17 0.09 10.13 1.10 3293500200014 14.10 0.09 7.27 1.20 3293500200015 13.99 0.09 5.11 0.97 3293500200016 13.95 0.09 3.10 0.63 3293500200017 13.86 0.08 2.26 0.55 3293500200018 13.70 0.07 0.80 0.24 3293500200019 13.68 0.07 0.36 0.15 3293500200020 13.61 0.06 0.29 0.15 3293500200021 ENDDATA 14 0 3293500200022 ENDSUBENT 21 0 3293500299999 ENDENTRY 2 0 3293599999999