ENTRY C2607 20210504 C204C260700000001
SUBENT C2607001 20210504 C204C260700100001
BIB 12 46 C260700100002
TITLE Relative High Energy Neutron Yields from Targets C260700100003
Bombarded with Protons and Deuterons C260700100004
AUTHOR (W.J.Knox) C260700100005
REFERENCE (J,PR,81,687,1951) C260700100006
#doi:10.1103/PhysRev.81.687 C260700100007
INSTITUTE (1USABRK) C260700100008
FACILITY (CYCLO,1USABRK) The 184-inch Berkeley cyclotron. C260700100009
INC-SPECT The deuterons produced by the cyclotron have C260700100010
a maximum energy of 190 MeV, and a beam of about C260700100011
10**-6-amp average current can be obtained. The C260700100012
protons have a maximum energy of 340 MeV and can be C260700100013
produced with an average beam current of the order of C260700100014
5*10**-7 amp. C260700100015
DETECTOR (FISCH,GEMUC) Bi fission chamber. C260700100016
METHOD Bismuth fission chambers were used to detect the high C260700100017
energy neutrons. Graphite monitors were used to C260700100018
determine the fluxes of protons or deuterons C260700100019
traversing the targets. The monitors were attached to C260700100020
the target so that the beam passed, simultaneously, C260700100021
through both target and monitor. At the end of the C260700100022
bombardment the monitor was removed and the counting C260700100023
rate of the C11 activity in it was determined on a C260700100024
Geiger-Mueller counter at a suitable later time. C260700100025
Sometimes decay curves were taken through an aluminum C260700100026
absorber so that the positron annihilation radiation C260700100027
of the C11 was counted instead of the positrons C260700100028
themselves. C260700100029
ANALYSIS (DECAY) C260700100030
ERR-ANALYS (DATA-ERR) The relative neutron yield from a given C260700100031
element was obtained by comparison of its corrected C260700100032
neutron yield to the yield from a standard carbon C260700100033
target. The estimated probable error of a single C260700100034
determination of such a ratio is about 10 percent. C260700100035
This error arises mainly in the determination of the C260700100036
flux of deuterons or protons traversing a target, but C260700100037
also has contributions from the neutron counting C260700100038
statistics and from the correction made for the C260700100039
production of neutrons in the carbon monitors. The C260700100040
errors in measurements of the thicknesses and C260700100041
densities of the targets are negligible. C260700100042
CORRECTION For each of the four targets used in a given run, the C260700100043
neutron counting rate was determined and corrected C260700100044
for the neutrons produced in the monitors and the C260700100045
relative neutron yields for the four targets were C260700100046
calculated. C260700100047
HISTORY (20210504C) BP C260700100048
ENDBIB 46 0 C260700100049
COMMON 1 3 C260700100050
DATA-ERR C260700100051
PER-CENT C260700100052
10.0 C260700100053
ENDCOMMON 3 0 C260700100054
ENDSUBENT 53 0 C260700199999
SUBENT C2607002 20210504 C204C260700200001
BIB 3 4 C260700200002
REACTION ((4-BE-9(D,X)0-NN-1,,PY,,TT/MSC)/ C260700200003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700200004
SAMPLE Both targets were 0.25" thick. C260700200005
STATUS (TABLE) Table I, page 690. C260700200006
ENDBIB 4 0 C260700200007
COMMON 1 3 C260700200008
EN C260700200009
MEV C260700200010
190.0 C260700200011
ENDCOMMON 3 0 C260700200012
DATA 1 1 C260700200013
DATA C260700200014
NO-DIM C260700200015
0.93 C260700200016
ENDDATA 3 0 C260700200017
ENDSUBENT 16 0 C260700299999
SUBENT C2607003 20210504 C204C260700300001
BIB 3 4 C260700300002
REACTION ((13-AL-27(D,X)0-NN-1,,PY,,TT/MSC)/ C260700300003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700300004
SAMPLE Both targets were 0.25" thick. C260700300005
STATUS (TABLE) Table I, page 690. C260700300006
ENDBIB 4 0 C260700300007
COMMON 1 3 C260700300008
EN C260700300009
MEV C260700300010
190.0 C260700300011
ENDCOMMON 3 0 C260700300012
DATA 1 1 C260700300013
DATA C260700300014
NO-DIM C260700300015
1.37 C260700300016
ENDDATA 3 0 C260700300017
ENDSUBENT 16 0 C260700399999
SUBENT C2607004 20210504 C204C260700400001
BIB 3 5 C260700400002
REACTION ((29-CU-0(D,X)0-NN-1,,PY,,TT/MSC)/ C260700400003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700400004
SAMPLE Carbon target was 0.25" thick. Two copper targets 0.20"C260700400005
and 0.25" thick were used. C260700400006
STATUS (TABLE) Table I, page 690. C260700400007
ENDBIB 5 0 C260700400008
COMMON 1 3 C260700400009
EN C260700400010
MEV C260700400011
190.0 C260700400012
ENDCOMMON 3 0 C260700400013
DATA 1 1 C260700400014
DATA C260700400015
NO-DIM C260700400016
1.58 C260700400017
ENDDATA 3 0 C260700400018
ENDSUBENT 17 0 C260700499999
SUBENT C2607005 20210504 C204C260700500001
BIB 3 5 C260700500002
REACTION ((47-AG-0(D,X)0-NN-1,,PY,,TT/MSC)/ C260700500003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700500004
SAMPLE Carbon target was 0.25" thick. Silver target was 0.184"C260700500005
thick. C260700500006
STATUS (TABLE) Table I, page 690. C260700500007
ENDBIB 5 0 C260700500008
COMMON 1 3 C260700500009
EN C260700500010
MEV C260700500011
190.0 C260700500012
ENDCOMMON 3 0 C260700500013
DATA 1 1 C260700500014
DATA C260700500015
NO-DIM C260700500016
2.19 C260700500017
ENDDATA 3 0 C260700500018
ENDSUBENT 17 0 C260700599999
SUBENT C2607006 20210504 C204C260700600001
BIB 3 5 C260700600002
REACTION ((82-PB-0(D,X)0-NN-1,,PY,,TT/MSC)/ C260700600003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700600004
SAMPLE Carbon target was 0.25" thick. Lead targets were 0.25" C260700600005
and 0.21" thick. C260700600006
STATUS (TABLE) Table I, page 690. C260700600007
ENDBIB 5 0 C260700600008
COMMON 1 3 C260700600009
EN C260700600010
MEV C260700600011
190.0 C260700600012
ENDCOMMON 3 0 C260700600013
DATA 1 1 C260700600014
DATA C260700600015
NO-DIM C260700600016
3.65 C260700600017
ENDDATA 3 0 C260700600018
ENDSUBENT 17 0 C260700699999
SUBENT C2607007 20210504 C204C260700700001
BIB 3 5 C260700700002
REACTION ((92-U-238(D,X)0-NN-1,,PY,,TT/MSC)/ C260700700003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260700700004
SAMPLE Carbon target was 0.25" thick. Lead targets were 0.25" C260700700005
and 0.21" thick. C260700700006
STATUS (TABLE) Table I, page 690. C260700700007
ENDBIB 5 0 C260700700008
COMMON 1 3 C260700700009
EN C260700700010
MEV C260700700011
190.0 C260700700012
ENDCOMMON 3 0 C260700700013
DATA 1 1 C260700700014
DATA C260700700015
NO-DIM C260700700016
3.86 C260700700017
ENDDATA 3 0 C260700700018
ENDSUBENT 17 0 C260700799999
SUBENT C2607008 20210504 C204C260700800001
BIB 3 4 C260700800002
REACTION ((4-BE-9(P,X)0-NN-1,,PY,,TT/MSC)/ C260700800003
(6-C-12(P,X)0-NN-1,,PY,,TT/MSC)) C260700800004
SAMPLE Be and C targets were 0.25" and 0.50" thick. C260700800005
STATUS (TABLE) Table II, page 691. C260700800006
ENDBIB 4 0 C260700800007
COMMON 1 3 C260700800008
EN C260700800009
MEV C260700800010
340.0 C260700800011
ENDCOMMON 3 0 C260700800012
DATA 1 1 C260700800013
DATA C260700800014
NO-DIM C260700800015
1.5 C260700800016
ENDDATA 3 0 C260700800017
ENDSUBENT 16 0 C260700899999
SUBENT C2607009 20210504 C204C260700900001
BIB 3 4 C260700900002
REACTION ((13-AL-27(P,X)0-NN-1,,PY,,TT/MSC)/ C260700900003
(6-C-12(P,X)0-NN-1,,PY,,TT/MSC)) C260700900004
SAMPLE Al and C targets were 0.25" and 0.50" thick. C260700900005
STATUS (TABLE) Table II, page 691. C260700900006
ENDBIB 4 0 C260700900007
COMMON 1 3 C260700900008
EN C260700900009
MEV C260700900010
340.0 C260700900011
ENDCOMMON 3 0 C260700900012
DATA 1 1 C260700900013
DATA C260700900014
NO-DIM C260700900015
2.1 C260700900016
ENDDATA 3 0 C260700900017
ENDSUBENT 16 0 C260700999999
SUBENT C2607010 20210504 C204C260701000001
BIB 3 5 C260701000002
REACTION ((29-CU-0(P,X)0-NN-1,,PY,,TT/MSC)/ C260701000003
(6-C-12(P,X)0-NN-1,,PY,,TT/MSC)) C260701000004
SAMPLE C targets were 0.25" and 0.50" thick. C260701000005
Cu targets 0.20" and 0.25". C260701000006
STATUS (TABLE) Table II, page 691. C260701000007
ENDBIB 5 0 C260701000008
COMMON 1 3 C260701000009
EN C260701000010
MEV C260701000011
340.0 C260701000012
ENDCOMMON 3 0 C260701000013
DATA 1 1 C260701000014
DATA C260701000015
NO-DIM C260701000016
3.7 C260701000017
ENDDATA 3 0 C260701000018
ENDSUBENT 17 0 C260701099999
SUBENT C2607011 20210504 C204C260701100001
BIB 3 5 C260701100002
REACTION ((47-AG-0(P,X)0-NN-1,,PY,,TT/MSC)/ C260701100003
(6-C-12(P,X)0-NN-1,,PY,,TT/MSC)) C260701100004
SAMPLE C targets were 0.25" and 0.50" thick. C260701100005
Ag target was 0.184" thick. C260701100006
STATUS (TABLE) Table I, page 690. C260701100007
ENDBIB 5 0 C260701100008
COMMON 1 3 C260701100009
EN C260701100010
MEV C260701100011
340.0 C260701100012
ENDCOMMON 3 0 C260701100013
DATA 1 1 C260701100014
DATA C260701100015
NO-DIM C260701100016
5.8 C260701100017
ENDDATA 3 0 C260701100018
ENDSUBENT 17 0 C260701199999
SUBENT C2607012 20210504 C204C260701200001
BIB 3 5 C260701200002
REACTION ((82-PB-0(D,X)0-NN-1,,PY,,TT/MSC)/ C260701200003
(6-C-12(D,X)0-NN-1,,PY,,TT/MSC)) C260701200004
SAMPLE C targets were 0.25" and 0.50" thick. C260701200005
Pb targets were 0.21" and 0.25" thick. C260701200006
STATUS (TABLE) Table II, page 691. C260701200007
ENDBIB 5 0 C260701200008
COMMON 1 3 C260701200009
EN C260701200010
MEV C260701200011
340.0 C260701200012
ENDCOMMON 3 0 C260701200013
DATA 1 1 C260701200014
DATA C260701200015
NO-DIM C260701200016
8.3 C260701200017
ENDDATA 3 0 C260701200018
ENDSUBENT 17 0 C260701299999
SUBENT C2607013 20210504 C204C260701300001
BIB 3 5 C260701300002
REACTION ((92-U-238(P,X)0-NN-1,,PY,,TT/MSC)/ C260701300003
(6-C-12(P,X)0-NN-1,,PY,,TT/MSC)) C260701300004
SAMPLE C targets were 0.25" and 0.50" thick. C260701300005
U targets were 0.12" and 0.25" thick. C260701300006
STATUS (TABLE) Table II, page 691. C260701300007
ENDBIB 5 0 C260701300008
COMMON 1 3 C260701300009
EN C260701300010
MEV C260701300011
340.0 C260701300012
ENDCOMMON 3 0 C260701300013
DATA 1 1 C260701300014
DATA C260701300015
NO-DIM C260701300016
8.9 C260701300017
ENDDATA 3 0 C260701300018
ENDSUBENT 17 0 C260701399999
ENDENTRY 13 0 C260799999999