ENTRY C2716 20220120 C212C271600000001 SUBENT C2716001 20220120 C212C271600100001 BIB 10 21 C271600100002 TITLE Thick-target excitation functions for alpha particles C271600100003 AUTHOR (E.Segre,C.Wiegand) C271600100004 REFERENCE (R,LA-136,1944) C271600100005 INSTITUTE (1USALAS) C271600100006 INC-SOURCE A strong polonium sample (158 or 280 mc) prepared by C271600100007 Prestwood by electrolysis on platinum, 210Po alpha C271600100008 particles. Present day energy values is 5.40753 MeV C271600100009 compared to 5.3 MeV in the report. C271600100010 DETECTOR (BF3) C271600100011 METHOD The energy of the alpha particles impinging on the C271600100012 target is varied by changing the pressure of the air C271600100013 contained in the collimator. The neutrons were C271600100014 counted in BF3 chamber. The background effect was C271600100015 measured with a brass target, at various air C271600100016 pressures in the collimator. C271600100017 CORRECTION Corrected the observed neutron intensities to take C271600100018 into account some variation in area of the targets C271600100019 and their chemical composition. C271600100020 COMMENT Compiler's comment: Continuous curves, points were C271600100021 chosen by a compiler. C271600100022 HISTORY (20220120C) BP C271600100023 ENDBIB 21 0 C271600100024 NOCOMMON 0 0 C271600100025 ENDSUBENT 24 0 C271600199999 SUBENT C2716002 20220120 C212C271600200001 BIB 3 4 C271600200002 REACTION (4-BE-9(A,X)0-NN-1,,PY,,MSC) C271600200003 Thick target product yield, thickness unspecified C271600200004 SAMPLE Be, thick target. C271600200005 STATUS (CURVE) Fig. 2, page 6. C271600200006 ENDBIB 4 0 C271600200007 NOCOMMON 0 0 C271600200008 DATA 2 36 C271600200009 EN DATA C271600200010 MEV PRD/INC C271600200011 0.956 0.381E-06 C271600200012 1.085 0.826E-06 C271600200013 1.195 1.030E-06 C271600200014 1.311 1.356E-06 C271600200015 1.427 1.805E-06 C271600200016 1.544 2.255E-06 C271600200017 1.667 2.827E-06 C271600200018 1.777 3.652E-06 C271600200019 1.894 4.226E-06 C271600200020 2.017 4.922E-06 C271600200021 2.140 5.990E-06 C271600200022 2.263 6.810E-06 C271600200023 2.380 7.757E-06 C271600200024 2.492 9.327E-06 C271600200025 2.621 10.145E-06 C271600200026 2.726 11.097E-06 C271600200027 2.862 12.409E-06 C271600200028 2.973 13.109E-06 C271600200029 3.097 14.675E-06 C271600200030 3.220 15.495E-06 C271600200031 3.338 17.187E-06 C271600200032 3.456 19.128E-06 C271600200033 3.575 21.068E-06 C271600200034 3.693 23.133E-06 C271600200035 3.812 25.571E-06 C271600200036 3.933 29.127E-06 C271600200037 4.053 32.310E-06 C271600200038 4.187 36.730E-06 C271600200039 4.296 41.285E-06 C271600200040 4.418 45.835E-06 C271600200041 4.528 50.638E-06 C271600200042 4.651 55.684E-06 C271600200043 4.768 61.231E-06 C271600200044 4.879 66.903E-06 C271600200045 4.997 73.443E-06 C271600200046 5.075 77.141E-06 C271600200047 ENDDATA 38 0 C271600200048 ENDSUBENT 47 0 C271600299999 SUBENT C2716003 20220120 C212C271600300001 BIB 3 4 C271600300002 REACTION (5-B-0(A,X)0-NN-1,,PY,,MSC) C271600300003 Thick target product yield, thickness unspecified C271600300004 SAMPLE B2O3, thick target. C271600300005 STATUS (CURVE) Fig. 2, page 6. C271600300006 ENDBIB 4 0 C271600300007 NOCOMMON 0 0 C271600300008 DATA 2 29 C271600300009 EN DATA C271600300010 MEV PRD/INC C271600300011 1.859 0.635E-06 C271600300012 1.889 0.747E-06 C271600300013 2.018 0.943E-06 C271600300014 2.128 1.271E-06 C271600300015 2.250 1.594E-06 C271600300016 2.379 1.915E-06 C271600300017 2.495 2.489E-06 C271600300018 2.612 2.939E-06 C271600300019 2.734 3.014E-06 C271600300020 2.850 3.463E-06 C271600300021 2.979 3.908E-06 C271600300022 3.096 4.606E-06 C271600300023 3.206 4.934E-06 C271600300024 3.335 5.504E-06 C271600300025 3.464 6.197E-06 C271600300026 3.574 7.022E-06 C271600300027 3.697 7.842E-06 C271600300028 3.820 8.289E-06 C271600300029 3.925 9.365E-06 C271600300030 4.054 10.058E-06 C271600300031 4.171 11.005E-06 C271600300032 4.294 11.949E-06 C271600300033 4.411 12.772E-06 C271600300034 4.523 14.094E-06 C271600300035 4.634 15.167E-06 C271600300036 4.770 16.728E-06 C271600300037 4.888 18.047E-06 C271600300038 5.00 18.870E-06 C271600300039 5.079 19.834E-06 C271600300040 ENDDATA 31 0 C271600300041 ENDSUBENT 40 0 C271600399999 SUBENT C2716004 20220120 C212C271600400001 BIB 3 4 C271600400002 REACTION (9-F-19(A,X)0-NN-1,,PY,,MSC) C271600400003 Thick target product yield, thickness unspecified C271600400004 SAMPLE (CF2)x, thick target. C271600400005 STATUS (CURVE) Fig. 2, page 6. C271600400006 ENDBIB 4 0 C271600400007 NOCOMMON 0 0 C271600400008 DATA 2 18 C271600400009 EN DATA C271600400010 MEV PRD/INC C271600400011 3.097 0.877E-06 C271600400012 3.219 1.200E-06 C271600400013 3.329 1.155E-06 C271600400014 3.463 1.349E-06 C271600400015 3.567 1.680E-06 C271600400016 3.689 1.754E-06 C271600400017 3.812 2.077E-06 C271600400018 3.946 2.271E-06 C271600400019 4.057 2.848E-06 C271600400020 4.173 3.422E-06 C271600400021 4.296 3.869E-06 C271600400022 4.407 4.694E-06 C271600400023 4.524 5.516E-06 C271600400024 4.653 6.458E-06 C271600400025 4.777 7.775E-06 C271600400026 4.882 8.975E-06 C271600400027 5.012 10.414E-06 C271600400028 5.061 10.891E-06 C271600400029 ENDDATA 20 0 C271600400030 ENDSUBENT 29 0 C271600499999 ENDENTRY 4 0 C271699999999