ENTRY 14543 20190612 14551454300000001
SUBENT 14543001 20190612 14551454300100001
BIB 9 33 1454300100002
TITLE Origin of protons in californium-252 fission 1454300100003
AUTHOR (J.A.Adams,R.R.Roy) 1454300100004
INSTITUTE (1USAASU) 1454300100005
REFERENCE (J,NSE,63,41,1977) 1454300100006
#NSR: 1977AD05 1454300100007
SAMPLE The source consists of a 2-mm-diam spot of 252Cf 1454300100008
deposited on a 2-mm-thick platinum disk. An 1454300100009
aluminum ring mount holds both the source disk and a 1454300100010
9 mg/cm2 thick nickel cover foil. The source has an 1454300100011
activity of 3.e5 fissions per minute. 1454300100012
DETECTOR (SIBAR,SILI,TELES) A two-detector particle telescope 1454300100013
of the deltaE,E- type is used for energy measurement 1454300100014
and identification of the light charged particles. The 1454300100015
deltaE detector is a 60 mu-m thick, 50 mm2 totally 1454300100016
depleted silicon surface barrier detector, held in a 1454300100017
transmission mount. A 2000 mu-m thick, 80 mm2 lithium 1454300100018
drifted silicon detector is used for the E detector. 1454300100019
MONITOR A 210Po alpha-particle source was used to calibrate the1454300100020
telescope system. The calibration was checked by using 1454300100021
the long-range fission alpha particles from 252Cf as a 1454300100022
secondary standard. 1454300100023
CORRECTION For source air and nickel foil energy loss, 1454300100024
the (n,p) particle telescope background, 1454300100025
protons simulated by alpha particles detected with 1454300100026
coincident gamma rays, 1454300100027
protons from 58Ni(n,p) and 58Ni(alpha,p) reactions 1454300100028
in the nickel cover foil, 1454300100029
protons from 14Ni(alpha,p) reaction in air trapped 1454300100030
beneath the nickel cover foil, 1454300100031
knock-on protons, from hydrogenous material on the 1454300100032
surface of the source or on the inner side of the 1454300100033
cover foil. 1454300100034
HISTORY (20190612C) OG. 1454300100035
ENDBIB 33 0 1454300100036
NOCOMMON 0 0 1454300100037
ENDSUBENT 36 0 1454300199999
SUBENT 14543002 20190612 14551454300200001
BIB 3 4 1454300200002
REACTION (98-CF-252(0,F)1-H-1,TER,FY/DE,,REL) 1454300200003
ERR-ANALYS No information on uncertainties. 1454300200004
STATUS (CURVE) Fig.5 from Nucl.Sci.Eng.,63,41,1977 digitized 1454300200005
by GSYS2.4.7. 1454300200006
ENDBIB 4 0 1454300200007
NOCOMMON 0 0 1454300200008
DATA 3 39 1454300200009
E-MIN E-MAX DATA 1454300200010
MEV MEV ARB-UNITS 1454300200011
3.1269 3.5056 0.000385 1454300200012
3.5056 3.9338 0.000436 1454300200013
3.9338 4.3066 0.000463 1454300200014
4.3066 4.7396 0.000340 1454300200015
4.7396 5.1253 0.000607 1454300200016
5.1253 5.5077 0.000683 1454300200017
5.5077 5.9206 0.000452 1454300200018
5.9206 6.3489 0.000564 1454300200019
6.3489 6.7422 0.000959 1454300200020
6.7422 7.1506 0.001140 1454300200021
7.1506 7.5115 0.001087 1454300200022
7.5115 7.9134 0.000843 1454300200023
7.9134 8.3126 0.000763 1454300200024
8.3126 8.7441 0.000820 1454300200025
8.7441 9.1300 0.000933 1454300200026
9.1300 9.5288 0.000789 1454300200027
9.5288 9.9347 0.000845 1454300200028
9.9347 10.2987 0.000782 1454300200029
10.2987 10.7284 0.000697 1454300200030
10.7284 11.1307 0.000656 1454300200031
11.1307 11.5058 0.000578 1454300200032
11.5058 11.9142 0.000538 1454300200033
11.9142 12.3095 0.000411 1454300200034
12.3095 12.7065 0.000379 1454300200035
12.7065 13.0964 0.000280 1454300200036
13.0964 13.4985 0.000226 1454300200037
13.4985 13.9045 0.000221 1454300200038
13.9045 14.2906 0.000232 1454300200039
14.2906 14.7046 0.000236 1454300200040
14.7046 15.0929 0.000131 1454300200041
15.0929 15.5023 0.000145 1454300200042
15.5023 15.8770 0.000095 1454300200043
15.8770 16.2814 0.000054 1454300200044
16.2814 16.6986 0.000058 1454300200045
16.6986 17.1395 0.000041 1454300200046
17.1395 17.5203 0.000044 1454300200047
17.5203 17.8890 0.000027 1454300200048
17.8890 18.2856 0.000035 1454300200049
18.2856 18.6502 0.000008 1454300200050
ENDDATA 41 0 1454300200051
ENDSUBENT 50 0 1454300299999
SUBENT 14543003 20190612 14551454300300001
BIB 4 18 1454300300002
REACTION 1((98-CF-252(0,F)1-H-1,TER,FY)/ 1454300300003
(98-CF-252(0,F)2-HE-4,TER,FY)) Polar+tripartition 1454300300004
2((98-CF-252(0,F)1-H-1,TER,FY,,MSC)/ 1454300300005
(98-CF-252(0,F)2-HE-4,TER,FY)) Polar yield 1454300300006
3((98-CF-252(0,F)1-H-1,TER,FY,,MSC)/ 1454300300007
(98-CF-252(0,F)2-HE-4,TER,FY)) Tripartition yield 1454300300008
Data Gaussian-fitted and extrapolated to include 1454300300009
entire energy range. 1454300300010
ANALYSIS Proton yield (% Long-Range Alpha Particles) due to 1454300300011
telescope (n,p) (0.39+-0.04)% 1454300300012
simulated (0.03+-0.01)% 1454300300013
58Ni(n,p) reaction (1.11+-0.06)% 1454300300014
58Ni(alpha,p) reaction (0.005+-0.001)% 1454300300015
14Ni(alpha,p) reaction (0.34+-0.05)% 1454300300016
knock-on protons (0.81+-0.23)% 1454300300017
ERR-ANALYS (DATA-ERR) No information on sources of uncertainties 1454300300018
STATUS (TABLE) Table I from Nucl.Sci.Eng.,63,41,1977 1454300300019
(DEP,14543002) 1454300300020
ENDBIB 18 0 1454300300021
NOCOMMON 0 0 1454300300022
DATA 6 1 1454300300023
DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31454300300024
ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS ARB-UNITS 1454300300025
1.89E-02 0.11E-02 0.84E-02 0.04E-02 1.05E-02 0.06E-021454300300026
ENDDATA 3 0 1454300300027
ENDSUBENT 26 0 1454300399999
SUBENT 14543004 20190612 14551454300400001
BIB 5 17 1454300400002
REACTION 1(98-CF-252(0,F)1-H-1,TER,KEP) Polar+tripartition 1454300400003
2(98-CF-252(0,F)1-H-1,TER,KEP,,MSC) Polar yield 1454300400004
3(98-CF-252(0,F)1-H-1,TER,KEP,,MSC) Tripartition yield 1454300400005
Most Probable Energy (FWHM) 1454300400006
MISC-COL (MISC1) Full width at half maximum (FWHM) for sum of 1454300400007
polar+tripartition 1454300400008
(MISC2) FWHM for polar yield 1454300400009
(MISC3) FWHM for tripartition yield 1454300400010
ERR-ANALYS (DATA-ERR) No information on sources of uncertainties 1454300400011
ANALYSIS Most Probable Energy and FWHM for protons due to 1454300400012
simulated MPE =3.0+-0.2 MeV, FWHM =0.6+-0.1 MeV 1454300400013
58Ni(n,p) MPE =4.3+-0.2 MeV, FWHM =3.4+-0.2 MeV 1454300400014
58Ni(alpha,p) MPE =2.8+-0.2 MeV 1454300400015
14Ni(alpha,p) MPE =4.4+-0.2 MeV, FWHM =1.5+-0.3 MeV 1454300400016
knock-on protons MPE =3.2+-0.3 MeV, FWHM =1.0+-0.3 MeV 1454300400017
STATUS (TABLE) Table I from Nucl.Sci.Eng.,63,41,1977 1454300400018
(DEP,14543002) 1454300400019
ENDBIB 17 0 1454300400020
NOCOMMON 0 0 1454300400021
DATA 12 1 1454300400022
DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 31454300400023
MISC1 MISC1-ERR MISC2 MISC2-ERR MISC3 MISC3-ERR 1454300400024
MEV MEV MEV MEV MEV MEV 1454300400025
MEV MEV MEV MEV MEV MEV 1454300400026
7.8 0.2 10.0 0.2 6.6 0.2 1454300400027
8.4 0.3 7.6 0.2 7.0 0.2 1454300400028
ENDDATA 6 0 1454300400029
ENDSUBENT 28 0 1454300499999
SUBENT 14543005 20190612 14551454300500001
BIB 3 5 1454300500002
REACTION 1(98-CF-252(0,F)1-H-1,TER,FY,,MSC) Polar yield 1454300500003
2(98-CF-252(0,F)1-H-1,TER,FY,,MSC) Tripartition yield 1454300500004
ERR-ANALYS (DATA-ERR) No information on sources of uncertainties 1454300500005
STATUS (TABLE) Text from Nucl.Sci.Eng.,63,41,1977,p.41. 1454300500006
(DEP,14543002) 1454300500007
ENDBIB 5 0 1454300500008
NOCOMMON 0 0 1454300500009
DATA 4 1 1454300500010
DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1454300500011
PC/FIS PC/FIS PC/FIS PC/FIS 1454300500012
2.83E-03 0.18E-03 3.50E-03 0.20E-03 1454300500013
ENDDATA 3 0 1454300500014
ENDSUBENT 13 0 1454300599999
ENDENTRY 5 0 1454399999999