ENTRY C3065 20250506 C306500000001 SUBENT C3065001 20250506 20251001 C306500100001 BIB 13 44 C306500100002 TITLE Measurements of the 27Al(alpha,n) Thick Target Yield C306500100003 near Threshold C306500100004 AUTHOR (K.Brandenburg,G.Hamad,Z.Meisel,C.R.Brune,D.E.Carter, C306500100005 J.Derkin,D.C.Ingram,Y.Jones-Alberty,B.Kenady, C306500100006 T.N.Massey,M.Saxena,D.Soltesz,S.K.Subedi,J.Warren) C306500100007 REFERENCE (J,NSE,197,510,2023) C306500100008 #doi:10.1080/00295639.2022.2118483 C306500100009 REL-REF (A,D0047010,D.West+,J,ANE,9,551,1982) C306500100010 (A,C1584001,N.A.Roughton+,J,AND,28,341,1983) C306500100011 INSTITUTE (1USAOHO) C306500100012 FACILITY (VDGT,1USAOHO) 4.5-MV T-Type tandem pelletron. C306500100013 DETECTOR (BF3,HE3SP) The 3HeBF3 Giant Barrel (HeBGB) neutron C306500100014 detector at the Edwards Accelerator Laboratory. C306500100015 SAMPLE The 27Al thick target was made of Reynolds Wrap C306500100016 aluminum foil, cleaned by an alcohol solution, and C306500100017 folded over several times to make a stopping target. C306500100018 Reynolds Wrap is manufactured to have high purity of C306500100019 aluminum; where possible, contaminants are <1% by C306500100020 weight of magnesium, silicon, titanium, chromium, C306500100021 iron, manganese, copper, and zinc and <0.15% of all C306500100022 other elements. C306500100023 METHOD For our thick-target-yield measurements, the incident C306500100024 charge was measured by summing the beam current of C306500100025 the target ladder and target chamber within HeBGB. To C306500100026 ensure the entirety of the beam was on-target, at C306500100027 each measurement energy the beam was first tuned C306500100028 through an empty space in the target ladder, and the C306500100029 beam intensity Ialpha was recorded on a downstream C306500100030 Faraday cup. Empty target measurements were C306500100031 periodically recorded for enough time to provide C306500100032 high-statistics background measurements. The number C306500100033 of detected neutrons Nn,det was counted using the 3He C306500100034 and BF3 neutron-sensitive proportional counters. C306500100035 ANALYSIS The yield at each energy is calculated by Y = C306500100036 Nn,det/(Ialpha*flive*eff), where Ialpha*t is the C306500100037 integrated charge on the target for a measurement, C306500100038 the live fraction flive of the data acquisition and C306500100039 eff=7.5+-1.2%. C306500100040 ERR-ANALYS (ERR-T) All uncertainties were added in quadratures to C306500100041 obtain the total yield uncertainty. C306500100042 (ERR-1) Stopping power. C306500100043 (ERR-2) Integrated charge. C306500100044 STATUS (APRVD) Approved by Z.Meisel on May 14, 2025. C306500100045 HISTORY (20250506C) BP C306500100046 ENDBIB 44 0 C306500100047 COMMON 2 3 C306500100048 ERR-1 ERR-2 C306500100049 PER-CENT PER-CENT C306500100050 5.0 1.0 C306500100051 ENDCOMMON 3 0 C306500100052 ENDSUBENT 51 0 C306500199999 SUBENT C3065002 20250506 20251001 C306500200001 BIB 2 4 C306500200002 REACTION (13-AL-27(A,N)15-P-30,,MLT,,TT) C306500200003 Neutron yield per incident alpha particle. C306500200004 STATUS (TABLE,,K.Brandenburg+,J,NSE,197,510,2023) Fig. - 2 C306500200005 Data were provide by Z.Meisel on May 9, 2025. C306500200006 ENDBIB 4 0 C306500200007 NOCOMMON 0 0 C306500200008 DATA 4 92 C306500200009 EN EN-RSL DATA ERR-T C306500200010 MEV MEV PRT/INC PRT/INC C306500200011 3.084 0.0110143 6.43E-12 4.02E-12 C306500200012 3.09 0.0110357 3.05E-11 9.36E-12 C306500200013 3.101 0.011075 3.96E-11 1.10E-11 C306500200014 3.11 0.0111071 1.48E-11 6.32E-12 C306500200015 3.121 0.0111464 1.20E-11 6.10E-12 C306500200016 3.129 0.011175 1.96E-11 7.12E-12 C306500200017 3.141 0.0112179 2.65E-11 8.68E-12 C306500200018 3.15 0.0112500 3.13E-11 9.00E-12 C306500200019 3.16 0.0112857 4.84E-11 1.21E-11 C306500200020 3.17 0.0113214 5.55E-11 1.36E-11 C306500200021 3.18 0.0113571 5.11E-11 1.35E-11 C306500200022 3.19 0.0113929 6.21E-11 1.46E-11 C306500200023 3.201 0.0114321 6.13E-11 1.57E-11 C306500200024 3.209 0.0114607 5.95E-11 1.43E-11 C306500200025 3.221 0.0115036 7.21E-11 1.65E-11 C306500200026 3.231 0.0115393 6.71E-11 1.56E-11 C306500200027 3.241 0.011575 9.21E-11 1.97E-11 C306500200028 3.252 0.0116143 1.06E-10 2.20E-11 C306500200029 3.261 0.0116464 1.28E-10 2.55E-11 C306500200030 3.271 0.0116821 1.38E-10 2.76E-11 C306500200031 3.281 0.0117179 1.54E-10 2.92E-11 C306500200032 3.29 0.0117500 1.39E-10 2.69E-11 C306500200033 3.301 0.0117893 1.79E-10 3.36E-11 C306500200034 3.31 0.0118214 1.69E-10 3.15E-11 C306500200035 3.321 0.0118607 1.82E-10 3.38E-11 C306500200036 3.33 0.0118929 1.73E-10 3.24E-11 C306500200037 3.341 0.0119321 1.77E-10 3.30E-11 C306500200038 3.35 0.0119643 2.18E-10 3.99E-11 C306500200039 3.359 0.0119964 2.54E-10 4.62E-11 C306500200040 3.371 0.0120393 2.56E-10 4.66E-11 C306500200041 3.38 0.0120714 2.63E-10 4.79E-11 C306500200042 3.392 0.0121143 2.74E-10 4.79E-11 C306500200043 3.401 0.0121464 3.31E-10 5.76E-11 C306500200044 3.41 0.0121786 5.56E-10 9.47E-11 C306500200045 3.421 0.0122179 6.18E-10 1.05E-10 C306500200046 3.432 0.0122571 9.22E-10 1.55E-10 C306500200047 3.441 0.0122893 9.73E-10 1.63E-10 C306500200048 3.451 0.012325 1.01E-09 1.66E-10 C306500200049 3.46 0.0123571 1.09E-09 1.80E-10 C306500200050 3.471 0.0123964 1.13E-09 1.87E-10 C306500200051 3.48 0.0124286 1.15E-09 1.88E-10 C306500200052 3.491 0.0124679 1.13E-09 1.88E-10 C306500200053 3.502 0.0125071 1.31E-09 2.16E-10 C306500200054 3.511 0.0125393 1.19E-09 1.95E-10 C306500200055 3.521 0.012575 1.20E-09 1.98E-10 C306500200056 3.531 0.0126107 1.25E-09 2.06E-10 C306500200057 3.541 0.0126464 1.27E-09 2.10E-10 C306500200058 3.55 0.0126786 1.34E-09 2.20E-10 C306500200059 3.561 0.0127179 1.38E-09 2.27E-10 C306500200060 3.57 0.0127500 1.38E-09 2.28E-10 C306500200061 3.581 0.0127893 1.78E-09 2.92E-10 C306500200062 3.59 0.0128214 1.73E-09 2.84E-10 C306500200063 3.601 0.0128607 1.90E-09 3.12E-10 C306500200064 3.61 0.0128929 1.95E-09 3.16E-10 C306500200065 3.62 0.0129286 2.06E-09 3.37E-10 C306500200066 3.63 0.0129643 2.26E-09 3.67E-10 C306500200067 3.643 0.0130107 2.31E-09 3.79E-10 C306500200068 3.65 0.0130357 2.32E-09 3.77E-10 C306500200069 3.66 0.0130714 2.60E-09 4.25E-10 C306500200070 3.671 0.0131107 3.32E-09 5.37E-10 C306500200071 3.69 0.0131786 4.69E-09 7.58E-10 C306500200072 3.71 0.0132500 4.78E-09 7.73E-10 C306500200073 3.751 0.0133964 6.35E-09 1.03E-09 C306500200074 3.802 0.0135786 8.67E-09 1.40E-09 C306500200075 3.85 0.0137500 1.06E-08 1.70E-09 C306500200076 3.9 0.0139286 1.23E-08 1.98E-09 C306500200077 3.95 0.0141071 1.48E-08 2.37E-09 C306500200078 4.001 0.0142893 1.66E-08 2.66E-09 C306500200079 4.053 0.014475 1.83E-08 2.94E-09 C306500200080 4.101 0.0146464 2.23E-08 3.58E-09 C306500200081 4.156 0.0148429 2.82E-08 4.52E-09 C306500200082 4.201 0.0150036 3.23E-08 5.19E-09 C306500200083 4.249 0.015175 4.33E-08 6.94E-09 C306500200084 4.287 0.0153107 4.63E-08 7.41E-09 C306500200085 4.306 0.0153786 4.98E-08 7.98E-09 C306500200086 4.329 0.0154607 5.22E-08 8.36E-09 C306500200087 4.348 0.0155286 5.46E-08 8.74E-09 C306500200088 4.366 0.0155929 5.65E-08 9.04E-09 C306500200089 4.386 0.0156643 5.84E-08 9.36E-09 C306500200090 4.407 0.0157393 6.06E-08 9.71E-09 C306500200091 4.416 0.0157714 6.44E-08 1.03E-08 C306500200092 4.429 0.0158179 6.74E-08 1.08E-08 C306500200093 4.43 0.0158214 6.77E-08 1.08E-08 C306500200094 4.452 0.0159000 7.37E-08 1.18E-08 C306500200095 4.472 0.0159714 7.74E-08 1.24E-08 C306500200096 4.491 0.0160393 7.97E-08 1.28E-08 C306500200097 4.51 0.0161071 8.13E-08 1.30E-08 C306500200098 4.534 0.0161929 8.46E-08 1.35E-08 C306500200099 4.552 0.0162571 8.79E-08 1.41E-08 C306500200100 4.601 0.0164321 1.03E-07 1.65E-08 C306500200101 4.65 0.0166071 1.29E-07 2.06E-08 C306500200102 4.702 0.0167929 1.44E-07 2.31E-08 C306500200103 ENDDATA 94 0 C306500200104 ENDSUBENT 103 0 C306500299999 ENDENTRY 2 0 C306599999999