ENTRY L0234 20180904 L038L023400000001
SUBENT L0234001 20180904 L038L023400100001
BIB 14 34 L023400100002
TITLE The Gamma-Neutron Cross Section for N14 L023400100003
AUTHOR (J.D.King,R.N.H.Haslam,R.W.Parsons) L023400100004
REFERENCE (J,CJP,38,231,1960) L023400100005
#doi:10.1139/p60-023 L023400100006
INSTITUTE (1CANSAS) L023400100007
FACILITY (BETAT,1CANSAS) The University of Saskatchewan L023400100008
betatron. L023400100009
INC-SOURCE (BRST) L023400100010
SAMPLE Reagent quality dicyandiamide, C2H4N4, was pressed L023400100011
into disks of diameter 4.5 cm and thickness 1.2 cm; L023400100012
the mean weight of the samples was 24.86 g, the L023400100013
maximum deviation from this value being 0.03 g. L023400100014
DETECTOR (NAICR) Two 2 in. x 2 in. NaI crystals. L023400100015
METHOD (ACTIV) The targets were irradiated in the X-ray beam L023400100016
of the University of Saskatchewan betatron at regular L023400100017
intervals of approximately 0.2 MeV from 10.5 to 25 MeV.L023400100018
ANALYSIS The scale of the yield curve was determined by L023400100019
comparing the yields from thin samples of copper and L023400100020
dicyandiamide at 22 MeV with the aid of a flow L023400100021
counter; the yield from the reaction L023400100022
Cu63(gamma,n)Cu62 was assumed to be 2.25x10**8 L023400100023
disintegrations per mole per 100 roentgens (dose) L023400100024
(Roalsvig et al. 1959.) L023400100025
REL-REF (R,L0235001,J.P.Roalsvig+,J,CJP,37,607,1959) L023400100026
DECAY-DATA (7-N-13,9.93MIN,B+) L023400100027
CORRECTION Since dicyandiamide contains carbon, above 18.72 Mev L023400100028
the reaction C12(gamma,n)Cl1 will produce a positron L023400100029
emitter of half-life 20.5 minutes which contributes L023400100030
to the observed activity. A correction for this was L023400100031
determined experimentally at 1-Mev intervals by L023400100032
following the sample activity for 62 minutes and L023400100033
analyzing the resulting decay curve into its two L023400100034
components by the method of least squares. L023400100035
HISTORY (20180904C) BP L023400100036
ENDBIB 34 0 L023400100037
NOCOMMON 0 0 L023400100038
ENDSUBENT 37 0 L023400199999
SUBENT L0234002 20180904 L038L023400200001
BIB 3 3 L023400200002
REACTION (7-N-14(G,N)7-N-13,,SIG,,BRS) L023400200003
ANALYSIS (PLA) L023400200004
STATUS (CURVE) Fig. 4, page 237. L023400200005
ENDBIB 3 0 L023400200006
NOCOMMON 0 0 L023400200007
DATA 2 142 L023400200008
EN DATA L023400200009
MEV MB L023400200010
10.66 0.004 L023400200011
10.73 0.020 L023400200012
10.83 0.008 L023400200013
10.92 0.013 L023400200014
11.03 0.015 L023400200015
11.15 0.020 L023400200016
11.24 0.031 L023400200017
11.33 0.042 L023400200018
11.41 0.091 L023400200019
11.52 0.173 L023400200020
11.62 0.242 L023400200021
11.67 0.264 L023400200022
11.74 0.282 L023400200023
11.86 0.269 L023400200024
12.15 0.253 L023400200025
12.26 0.291 L023400200026
12.35 0.334 L023400200027
12.46 0.379 L023400200028
12.54 0.433 L023400200029
12.63 0.483 L023400200030
12.72 0.537 L023400200031
12.82 0.566 L023400200032
12.94 0.569 L023400200033
13.04 0.615 L023400200034
13.13 0.631 L023400200035
13.22 0.645 L023400200036
13.32 0.642 L023400200037
13.45 0.610 L023400200038
13.55 0.563 L023400200039
13.64 0.505 L023400200040
13.72 0.438 L023400200041
13.84 0.390 L023400200042
13.93 0.357 L023400200043
14.04 0.336 L023400200044
14.14 0.310 L023400200045
14.35 0.238 L023400200046
14.42 0.206 L023400200047
14.51 0.190 L023400200048
14.65 0.213 L023400200049
14.70 0.309 L023400200050
14.84 0.415 L023400200051
14.89 0.503 L023400200052
15.02 0.563 L023400200053
15.12 0.583 L023400200054
15.24 0.597 L023400200055
15.37 0.554 L023400200056
15.45 0.435 L023400200057
15.53 0.393 L023400200058
15.63 0.368 L023400200059
15.75 0.309 L023400200060
15.82 0.192 L023400200061
15.93 0.091 L023400200062
16.02 0.047 L023400200063
16.13 0.028 L023400200064
16.24 0.125 L023400200065
16.32 0.201 L023400200066
16.40 0.179 L023400200067
16.52 0.190 L023400200068
16.59 0.228 L023400200069
16.71 0.265 L023400200070
16.83 0.282 L023400200071
16.91 0.312 L023400200072
16.99 0.339 L023400200073
17.14 0.375 L023400200074
17.22 0.453 L023400200075
17.33 0.505 L023400200076
17.43 0.555 L023400200077
17.51 0.602 L023400200078
17.64 0.646 L023400200079
17.69 0.680 L023400200080
17.83 0.691 L023400200081
17.93 0.721 L023400200082
18.04 0.837 L023400200083
18.14 1.020 L023400200084
18.21 1.238 L023400200085
18.32 1.431 L023400200086
18.43 1.573 L023400200087
18.54 1.622 L023400200088
18.61 1.645 L023400200089
18.73 1.689 L023400200090
18.81 1.789 L023400200091
18.92 1.935 L023400200092
19.02 1.935 L023400200093
19.13 1.838 L023400200094
19.21 1.827 L023400200095
19.29 1.858 L023400200096
19.42 1.865 L023400200097
19.54 1.840 L023400200098
19.61 1.797 L023400200099
19.69 1.816 L023400200100
19.81 1.853 L023400200101
19.92 1.854 L023400200102
20.00 1.872 L023400200103
20.11 1.870 L023400200104
20.20 1.874 L023400200105
20.30 1.824 L023400200106
20.43 1.722 L023400200107
20.51 1.681 L023400200108
20.64 1.588 L023400200109
20.68 1.548 L023400200110
20.81 1.528 L023400200111
20.92 1.445 L023400200112
20.99 1.417 L023400200113
21.13 1.211 L023400200114
21.21 1.045 L023400200115
21.34 1.354 L023400200116
21.43 1.878 L023400200117
21.49 2.236 L023400200118
21.61 2.375 L023400200119
21.67 2.481 L023400200120
21.78 2.595 L023400200121
21.85 2.697 L023400200122
21.96 2.791 L023400200123
22.08 2.751 L023400200124
22.28 2.850 L023400200125
22.39 2.757 L023400200126
22.47 2.732 L023400200127
22.56 2.780 L023400200128
22.68 2.769 L023400200129
22.76 2.834 L023400200130
22.88 2.845 L023400200131
22.98 2.861 L023400200132
23.06 2.912 L023400200133
23.12 2.872 L023400200134
23.23 2.921 L023400200135
23.36 2.953 L023400200136
23.46 2.919 L023400200137
23.56 2.942 L023400200138
23.66 2.839 L023400200139
23.80 2.750 L023400200140
23.86 2.576 L023400200141
23.96 2.328 L023400200142
24.10 2.279 L023400200143
24.21 2.173 L023400200144
24.28 2.049 L023400200145
24.39 1.950 L023400200146
24.51 1.737 L023400200147
24.60 1.615 L023400200148
24.68 1.485 L023400200149
24.77 1.404 L023400200150
24.89 1.431 L023400200151
25.03 1.132 L023400200152
ENDDATA 144 0 L023400200153
ENDSUBENT 152 0 L023400299999
SUBENT L0234003 20180904 L038L023400300001
BIB 2 3 L023400300002
REACTION (7-N-14(G,N)7-N-13,,INT) L023400300003
STATUS (DEP,L0234002) L023400300004
(TABLE) page 238. L023400300005
ENDBIB 3 0 L023400300006
NOCOMMON 0 0 L023400300007
DATA 2 1 L023400300008
EN-MAX DATA L023400300009
MEV MB*MEV L023400300010
16.0 1.8 L023400300011
ENDDATA 3 0 L023400300012
ENDSUBENT 11 0 L023400399999
ENDENTRY 3 0 L023499999999