ENTRY 40898 20180129 41774089800000001
SUBENT 40898001 20180129 41774089800100001
BIB 10 21 4089800100002
TITLE Cross-section of the Np-237(n,2n)Np-236(22.5hr) 4089800100003
reaction caused by Cf-252 spontaneous fission neutrons 4089800100004
AUTHOR (E.A.Gromova,S.S.Kovalenko,Yu.A.Nemilov, 4089800100005
Yu.A.Selitskii,B.I.Tarler,V.B.Funshtein,V.A.Yakovlev) 4089800100006
INSTITUTE (4RUSRI) 4089800100007
REFERENCE (J,SJA,60,95,1986) 4089800100008
(J,AE,60,68,1986) is. 1. 4089800100009
MONITOR Relative measurements 4089800100010
METHOD (ACTIV) 161 day irradiation 4089800100011
DETECTOR (GELI) 4089800100012
INC-SOURCE (CF252) 50 microgram Cf-252 4089800100013
INC-SPECT Neutron fission spectrum of Cf252 4089800100014
Neutron flux was determined by threshold reactions 4089800100015
Ti-48(n,p), Ni-58(n,p), Al-27(n,p), Al-27(n,a) and 4089800100016
Au-197(n,2n). Results agree in the limit of exper. 4089800100017
error - 7% . 4089800100018
HISTORY (19860821C) Compiled at CJD 4089800100019
(20180123A) M.M. Upper -> lower case correction. 4089800100020
Dates were corrected for 4-digits year. 4089800100021
Ref. SJA,60,95,1986 was added. 4089800100022
BIB information was updated. 4089800100023
ENDBIB 21 0 4089800100024
COMMON 1 3 4089800100025
EN-DUMMY 4089800100026
MEV 4089800100027
1.5 4089800100028
ENDCOMMON 3 0 4089800100029
ENDSUBENT 28 0 4089800199999
SUBENT 40898002 20180129 41774089800200001
BIB 6 22 4089800200002
REACTION (93-NP-237(N,2N)93-NP-236-M,,SIG,,FIS) 4089800200003
DECAY-DATA (93-NP-236-M,22.5HR,B-,,0.48) 0.48+-0.01 4089800200004
(93-NP-237,2.14E+6YR,A) (2.14+-0.01)*10**6 yr. 4089800200005
(94-PU-239,,A) 4089800200006
(94-PU-236,,A) 4089800200007
ANALYSIS Alpha radiation intensities ratio of Pu-236 to Pu-239 4089800200008
was used to determine CS - see formula (1) in 4089800200009
J,SJA,60,95,1986 . 4089800200010
SAMPLE Neptunium-oxide Np-02 pressurized in the thin-wall 4089800200011
steel container, sample weight is 0.5 gram 4089800200012
ERR-ANALYS (ERR-1) Error of Pu-239 activity 4089800200013
(ERR-2) Error of the ratio of alpha-activities 4089800200014
of Pu-236 and Pu-239 4089800200015
(ERR-3) Error of the Np-237 number of atoms 4089800200016
(ERR-4) Error of the decay-constant of Pu-236 4089800200017
(ERR-5) Error of the probability of Np-236-M decay 4089800200018
(ERR-6) Error of the neutron flux determination and 4089800200019
error caused by the sample inhomogeneity 4089800200020
(ERR-7) Error caused by the Cf-252 and Pu-236 decay 4089800200021
constants uncertainty 4089800200022
(ERR-T) Total error 4089800200023
STATUS (TABLE) Text, page 97 of J,SJA,60,95,1986 4089800200024
ENDBIB 22 0 4089800200025
NOCOMMON 0 0 4089800200026
DATA 10 1 4089800200027
DATA ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 4089800200028
ERR-6 ERR-7 ERR-T ERR-T 4089800200029
MB PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 4089800200030
PER-CENT PER-CENT PER-CENT MB 4089800200031
4.66 2. 3. 0.8 0.3 2. 4089800200032
8. 1. 10. 0.47 4089800200033
ENDDATA 6 0 4089800200034
ENDSUBENT 33 0 4089800299999
ENDENTRY 2 0 4089899999999