ENTRY 14818 20230112 150614818000 1 SUBENT 14818001 20230112 150614818001 1 BIB 11 37 14818001 2 TITLE Angular Distribution of Neutrons Produced by 40- and 14818001 3 80-Mev Alpha Particles on a Thick Tantalum Target 14818001 4 AUTHOR (W.W.Wadman) 14818001 5 REFERENCE (R,UCRL-11375,1964) 14818001 6 REL-REF (O,C2883001,W.W.Wadman,R,UCRL-11375,1964) 14818001 7 Alpha particle mesurements. 14818001 8 INSTITUTE (1USABRK) 14818001 9 FACILITY (CYCLO,1USABRK) The 88-Inch Cyclotron at Berkeley. 14818001 10 DETECTOR (NAICR) 3-in. diam 3-in. long NaI(Tl) crystal and a 14818001 11 400-channel pulse-height analyzer. A collection of 14818001 12 threshold detectors was used: 58Ni(n,p)58Co, 14818001 13 59Co(n,alpha)56Mn, 65Cu(n,p)65Ni, 27Al(n,alpha)24Na, 14818001 14 203Th(n,2n)202Tl, 127I(n,2n)126I, and 58Ni(n,2n)57Ni. 14818001 15 SAMPLE The target was made of tantalum, and measured 2.5 in. 14818001 16 in diameter and 0.25 in. thick. This dimension was 14818001 17 adequate for stopping the alpha particles and for 14818001 18 covering the end of the copper Faraday cup in which 14818001 19 it was mounted. 14818001 20 METHOD (TTM) The experiment involved a target of a selected 14818001 21 material, a means of measuring the beam particle 14818001 22 current, the selected threshold detectors, a device 14818001 23 to mount the detectors at predetermined positions, 14818001 24 and a means to suppress secondary emission electrons 14818001 25 from escaping the current-measuring device. Each 14818001 26 threshold detector was counted at 3.0 cm from the 14818001 27 actual face of the NaI crystal. The resultant 14818001 28 gamma-ray spectra were used during the reduction of 14818001 29 the data. 14818001 30 CORRECTION The total counts in the photopeak were corrected for 14818001 31 decay and saturation. A correction was made for the 14818001 32 abundance of the gamma ray for the decay scheme for 14818001 33 each type of disintegration. The data were corrected 14818001 34 for counting geometry and total absolute efficiency 14818001 35 for the size of the NaI crystal, gamma-ray energies 14818001 36 distance of the sample from the crystal, and sample 14818001 37 size and thickness. 14818001 38 HISTORY (20230112C) BP 14818001 39 ENDBIB 37 0 14818001 40 NOCOMMON 0 0 14818001 41 ENDSUBENT 40 0 1481800199999 SUBENT 14818002 20230112 150614818002 1 BIB 2 3 14818002 2 REACTION (28-NI-58(N,P)27-CO-58,,SIG) 14818002 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818002 4 Fig. 7, page 27 of R,UCRL-11375,1964. 14818002 5 ENDBIB 3 0 14818002 6 NOCOMMON 0 0 14818002 7 DATA 2 35 14818002 8 EN DATA 14818002 9 MEV B 14818002 10 1.237 3.913E-03 14818002 11 1.495 1.150E-02 14818002 12 1.541 1.795E-02 14818002 13 2.047 1.397E-01 14818002 14 2.122 6.830E-02 14818002 15 2.174 5.550E-02 14818002 16 2.199 3.409E-02 14818002 17 2.260 1.285E-01 14818002 18 2.439 1.735E-01 14818002 19 2.537 1.066E-01 14818002 20 2.803 1.629E-01 14818002 21 2.901 2.068E-01 14818002 22 2.964 1.845E-01 14818002 23 3.259 1.824E-01 14818002 24 3.282 2.292E-01 14818002 25 3.400 1.696E-01 14818002 26 3.417 2.002E-01 14818002 27 3.605 2.968E-01 14818002 28 3.707 1.900E-01 14818002 29 4.168 4.581E-01 14818002 30 4.218 3.646E-01 14818002 31 5.139 4.967E-01 14818002 32 5.602 5.980E-01 14818002 33 5.919 1.722E-01 14818002 34 6.121 6.035E-01 14818002 35 6.785 5.842E-01 14818002 36 7.310 6.274E-01 14818002 37 8.054 6.462E-01 14818002 38 9.014 6.316E-01 14818002 39 13.828 3.056E-01 14818002 40 13.863 4.303E-01 14818002 41 13.964 5.632E-01 14818002 42 14.382 4.342E-01 14818002 43 14.526 4.165E-01 14818002 44 14.666 3.872E-01 14818002 45 ENDDATA 37 0 14818002 46 ENDSUBENT 45 0 1481800299999 SUBENT 14818003 20230112 150614818003 1 BIB 2 3 14818003 2 REACTION (29-CU-65(N,P)28-NI-65,,SIG) 14818003 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818003 4 Fig. 8, page 28 of R,UCRL-11375,1964. 14818003 5 ENDBIB 3 0 14818003 6 NOCOMMON 0 0 14818003 7 DATA 2 7 14818003 8 EN DATA 14818003 9 MEV B 14818003 10 2.222 3.103E-03 14818003 11 13.924 1.945E-02 14818003 12 13.944 2.869E-02 14818003 13 14.140 1.828E-02 14818003 14 14.742 2.614E-02 14818003 15 14.746 2.837E-02 14818003 16 14.824 3.110E-02 14818003 17 ENDDATA 9 0 14818003 18 ENDSUBENT 17 0 1481800399999 SUBENT 14818004 20230112 150614818004 1 BIB 2 3 14818004 2 REACTION (27-CO-59(N,A)25-MN-56,,SIG) 14818004 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818004 4 Fig. 9, page 29 of R,UCRL-11375,1964. 14818004 5 ENDBIB 3 0 14818004 6 NOCOMMON 0 0 14818004 7 DATA 2 4 14818004 8 EN DATA 14818004 9 MEV B 14818004 10 13.379 1.277E-01 14818004 11 14.383 1.461E-01 14818004 12 15.159 1.487E-01 14818004 13 15.655 1.530E-01 14818004 14 ENDDATA 6 0 14818004 15 ENDSUBENT 14 0 1481800499999 SUBENT 14818005 20230112 150614818005 1 BIB 2 3 14818005 2 REACTION (13-AL-27(N,A)11-NA-24,,SIG) 14818005 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818005 4 Fig. 10, page 30 of R,UCRL-11375,1964. 14818005 5 ENDBIB 3 0 14818005 6 NOCOMMON 0 0 14818005 7 DATA 2 38 14818005 8 EN DATA 14818005 9 MEV B 14818005 10 6.192 1.867E-03 14818005 11 6.398 3.482E-03 14818005 12 6.427 2.465E-03 14818005 13 6.524 5.787E-03 14818005 14 6.556 4.216E-03 14818005 15 6.628 8.016E-03 14818005 16 6.803 1.132E-02 14818005 17 6.830 1.438E-02 14818005 18 6.857 9.988E-03 14818005 19 6.981 1.644E-02 14818005 20 7.059 1.792E-02 14818005 21 7.109 1.522E-02 14818005 22 7.148 2.150E-02 14818005 23 7.276 2.009E-02 14818005 24 7.492 2.232E-02 14818005 25 7.502 2.433E-02 14818005 26 7.522 2.919E-02 14818005 27 7.877 3.335E-02 14818005 28 7.897 3.964E-02 14818005 29 7.935 3.030E-02 14818005 30 8.106 4.156E-02 14818005 31 8.122 4.799E-02 14818005 32 8.159 3.633E-02 14818005 33 8.386 4.441E-02 14818005 34 8.710 3.842E-02 14818005 35 8.720 4.229E-02 14818005 36 8.805 4.882E-02 14818005 37 12.023 1.072E-01 14818005 38 12.730 1.360E-01 14818005 39 13.068 1.333E-01 14818005 40 13.191 1.187E-01 14818005 41 13.537 1.257E-01 14818005 42 13.885 1.342E-01 14818005 43 13.931 1.108E-01 14818005 44 13.939 1.185E-01 14818005 45 14.407 1.106E-01 14818005 46 14.482 1.172E-01 14818005 47 14.954 1.126E-01 14818005 48 ENDDATA 40 0 14818005 49 ENDSUBENT 48 0 1481800599999 SUBENT 14818006 20230112 150614818006 1 BIB 2 3 14818006 2 REACTION (81-TL-203(N,2N)81-TL-202,,SIG) 14818006 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818006 4 Fig. 11, page 31 of R,UCRL-11375,1964. 14818006 5 ENDBIB 3 0 14818006 6 NOCOMMON 0 0 14818006 7 DATA 2 6 14818006 8 EN DATA 14818006 9 MEV B 14818006 10 12.270 8.386E-01 14818006 11 13.404 1.236E+00 14818006 12 13.774 1.286E+00 14818006 13 14.142 1.299E+00 14818006 14 14.510 1.311E+00 14818006 15 16.403 1.120E+00 14818006 16 ENDDATA 8 0 14818006 17 ENDSUBENT 16 0 1481800699999 SUBENT 14818007 20230112 150614818007 1 BIB 2 3 14818007 2 REACTION (53-I-127(N,2N)53-I-126,,SIG) 14818007 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818007 4 Fig. 12, page 32 of R,UCRL-11375,1964. 14818007 5 ENDBIB 3 0 14818007 6 NOCOMMON 0 0 14818007 7 DATA 2 5 14818007 8 EN DATA 14818007 9 MEV B 14818007 10 9.334 3.014E-02 14818007 11 12.218 8.891E-01 14818007 12 12.903 1.114E+00 14818007 13 13.805 1.312E+00 14818007 14 14.454 1.099E+00 14818007 15 ENDDATA 7 0 14818007 16 ENDSUBENT 15 0 1481800799999 SUBENT 14818008 20230112 150614818008 1 BIB 2 3 14818008 2 REACTION (28-NI-58(N,2N)28-NI-57,,SIG) 14818008 3 STATUS (CURVE,,W.W.Wadman,R,UCRL-11375,1964) 14818008 4 Fig. 13, page 33 of R,UCRL-11375,1964. 14818008 5 ENDBIB 3 0 14818008 6 NOCOMMON 0 0 14818008 7 DATA 2 12 14818008 8 EN DATA 14818008 9 MEV B 14818008 10 11.739 2.933E-03 14818008 11 13.489 1.401E-02 14818008 12 13.744 2.173E-02 14818008 13 13.797 1.901E-02 14818008 14 13.931 3.403E-02 14818008 15 14.016 3.927E-02 14818008 16 14.027 2.367E-02 14818008 17 14.336 3.242E-02 14818008 18 14.388 2.809E-02 14818008 19 14.396 3.003E-02 14818008 20 14.482 3.532E-02 14818008 21 14.502 4.195E-02 14818008 22 ENDDATA 14 0 14818008 23 ENDSUBENT 22 0 1481800899999 ENDENTRY 8 0 1481899999999