ENTRY 40190 20150625 41694019000000001
SUBENT 40190001 20150625 41694019000100001
BIB 10 43 4019000100002
INSTITUTE (4RUSKUR) 4019000100003
REFERENCE (J,SJA,30,452,1971) Eng.transl.of AE,30,369,1971 4019000100004
(J,AE,30,(4),369,1971) Data given 4019000100005
AUTHOR (N.I.Ivanova,A.N.Kobzev,N.G.Krylov,A.A.Lbov, 4019000100006
N.P.Martynov,A.E.Trikanov,A.I.Shelamkov) 4019000100007
TITLE Cross section of the Am-241(n,gamma)Am-242 reaction 4019000100008
for a neutron spectrum similar to the fission spectrum 4019000100009
INC-SPECT Neutron spectrum was close to fission spectrum and 4019000100010
had following energy distribution 4019000100011
energy (MeV) per-cent 4019000100012
0 - 0.1 3.8 4019000100013
0.1-0.4 19.3 4019000100014
0.4-0.9 26.9 4019000100015
0.9-1.4 15.0 4019000100016
1.4-3.0 23.8 4019000100017
above 3.0 11.2 4019000100018
SAMPLE ~ 1 mg of Am-241 chloride, alpha-activity ~7.2E+2 4019000100019
decay/min, gamma-activity ~2.7E+3 quanta/min. 4019000100020
In quartz cassettes, placed in Cd sheets of 0.5 mm 4019000100021
thickness. 4019000100022
With each Cd sheet Au-197 foil of ~2mg - for neutron 4019000100023
flux control. 4019000100024
DETECTOR (SCIN) Scintillation plastic detector 53 x 1 mm in size4019000100025
and an FEU-11B photomultiplier was used to measure 4019000100026
beta-activity. 4019000100027
Different registration thresholds, corresponding to 4019000100028
beta energy ~150-300 keV. 4019000100029
Calibration by Sr-90 (E-beta 0.54 MeV), Tl( 0.765 MeV),4019000100030
Au-198( 0.963 MeV). 4019000100031
Efficiency for Am-242 was 13.7 and 11 % depending from 4019000100032
threshold value. 4019000100033
PART-DET (B-) Decay beta 4019000100034
CORRECTION For background. 4019000100035
For decay at activation. 4019000100036
For decay scheme. 4019000100037
HISTORY (19740117C) Compiled at the centre 4019000100038
(19750210U) the number of subentry 40190002 corrected 4019000100039
(20150109A) SD: Updated to new date formats,lower case.4019000100040
Ref. on Engl.transl. of AE added. REACTION code moved4019000100041
to Subent 2. DATA-ERR -> ERR-T. ERR-ANALYS updated. 4019000100042
(20150625A) M.M. Article was checked, BIB information 4019000100043
was updated. SPA -> FIS. STATUS was added. 4019000100044
Subents 003,004 ( primarily measured data) were added. 4019000100045
ENDBIB 43 0 4019000100046
NOCOMMON 0 0 4019000100047
ENDSUBENT 46 0 4019000199999
SUBENT 40190002 20150625 41694019000200001
BIB 5 15 4019000200002
REACTION (95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000200003
Average of six measurements. 4019000200004
DECAY-DATA (95-AM-242-G,16.01HR) 4019000200005
ERR-ANALYS (ERR-T) Total error is given, it consists of 4019000200006
(ERR-1,2.,4.) Uncertainty in activity measurement(2-4%)4019000200007
(ERR-2) Uncertainty in half-life Am-242 (2%) 4019000200008
(ERR-3) Error of neutron flux determination (7%) 4019000200009
(ERR-4) Error of number of atoms in sample (4%) 4019000200010
(ERR-5) Error of detector efficiency (3%) 4019000200011
STATUS (TABLE) Table of J,AE,30,(4),369,1971 4019000200012
(DEP,40190003) In Subent 003 - primarily measured data 4019000200013
for each of 6 samples. 4019000200014
HISTORY (20150109A) SD: REACTION code added from Sub.1. 4019000200015
DECAY-DATA was added. 4019000200016
(20150625A) M.M. -G wa added in SF4. 4019000200017
ENDBIB 15 0 4019000200018
COMMON 4 3 4019000200019
ERR-2 ERR-3 ERR-4 ERR-5 4019000200020
PER-CENT PER-CENT PER-CENT PER-CENT 4019000200021
2. 7. 4. 3. 4019000200022
ENDCOMMON 3 0 4019000200023
DATA 3 1 4019000200024
EN-DUMMY DATA ERR-T 4019000200025
MEV MB MB 4019000200026
1. 240. 30. 4019000200027
ENDDATA 3 0 4019000200028
ENDSUBENT 27 0 4019000299999
SUBENT 40190003 20150109 41694019000300001
BIB 10 41 4019000300002
REACTION 1(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300003
2(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300004
3(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300005
4(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300006
5(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300007
6(95-AM-241(N,G)95-AM-242-G,,SIG,,FIS) 4019000300008
DECAY-DATA (95-AM-242-G,16.01HR,B,667.,,B,625.) 4019000300009
40.% of 667 keV, 60.% of 625 keV. 4019000300010
Beta decay - 83.6 %, electron capture (16.4+-0.3)%. 4019000300011
SAMPLE 1 Am-241 atoms 2.32E+18 4019000300012
2 1.23E+18 4019000300013
3 2.06E+18 4019000300014
4 4.9E+17 4019000300015
5 1.89E+18 4019000300016
6 1.22E+17 4019000300017
DETECTOR (IOCH) Number of Am-241 atoms was defined by 4019000300018
alpha-activity measurement in integral ionization 4019000300019
chamber. 4019000300020
METHOD (ACTIV) Beta activity measurement during 4-5 HL of 4019000300021
Am-242. 4019000300022
(CHSEP) Am was separated chemically and purified from 4019000300023
fission products during 20 hr. 4019000300024
ANALYSIS CS were calculated to 6 samples as: 4019000300025
(A*HL)/(N*Q*0.693) , where 4019000300026
A - absolute Am-242 activity at the end of activation 4019000300027
taking into account registration efficiency and 4019000300028
corrections; 4019000300029
HL - Am-242 half-life; 4019000300030
N - Am-241 atoms on sample; 4019000300031
Q - neutron flux. 4019000300032
MISC-COL (MISC1) Integral flux, neutron/cm2 , measured by fis. 4019000300033
chambers. 4019000300034
(MISC2) Am-242 absolute activity, decay/min . 4019000300035
ERR-ANALYS Total error consists of 4019000300036
(ERR-1,2.,4.) Uncertainty in activity measurement(2-4%)4019000300037
(ERR-2) Uncertainty in half-life Am-242 (2%) 4019000300038
(ERR-3) Error of neutron flux determination (7%) 4019000300039
(ERR-4) Error of number of atoms in sample (4%) 4019000300040
(ERR-5) Error of detector efficiency (3%) 4019000300041
STATUS (TABLE) Table of J,AE,30,(4),369,1971 4019000300042
HISTORY (20150625C) M.M. 4019000300043
ENDBIB 41 0 4019000300044
COMMON 5 3 4019000300045
EN-DUMMY ERR-2 ERR-3 ERR-4 ERR-5 4019000300046
MEV PER-CENT PER-CENT PER-CENT PER-CENT 4019000300047
1. 2. 7. 4. 3. 4019000300048
ENDCOMMON 3 0 4019000300049
DATA 18 1 4019000300050
DATA 1MISC1 1MISC2 1DATA 2MISC1 2MISC2 24019000300051
DATA 3MISC1 3MISC2 3DATA 4MISC1 4MISC2 44019000300052
DATA 5MISC1 5MISC2 5DATA 6MISC1 6MISC2 64019000300053
MB SEE TEXT SEE TEXT MB SEE TEXT SEE TEXT 4019000300054
MB SEE TEXT SEE TEXT MB SEE TEXT SEE TEXT 4019000300055
MB SEE TEXT SEE TEXT MB SEE TEXT SEE TEXT 4019000300056
228. 1.96E+15 7.4E+5 232. 1.96E+15 4.0E+54019000300057
233. 1.97E+15 6.8E+5 273. 1.97E+15 1.9E+54019000300058
235. 2.0E+15 6.4E+5 248. 2.0E+15 1.5E+54019000300059
ENDDATA 9 0 4019000300060
ENDSUBENT 59 0 4019000399999
SUBENT 40190004 20150625 41694019000400001
BIB 4 8 4019000400002
REACTION (79-AU-197(N,G)79-AU-198,,SIG,,FIS) 4019000400003
METHOD Au-197 capture c-s was measured by plastic scintillator4019000400004
for checking possible systematic errors in measurement 4019000400005
method. Obtained value of C-S agrees with value 150mb 4019000400006
from I.V.Gordeev+,Yaderno-fizicheskie konstanty,M., 4019000400007
Atomizdat,p.316, 1963 year. 4019000400008
STATUS (TABLE) Text, page 372 of J,AE,30,(4),369,1971 4019000400009
HISTORY (20150625C) M.M. 4019000400010
ENDBIB 8 0 4019000400011
NOCOMMON 0 0 4019000400012
DATA 3 1 4019000400013
EN-DUMMY DATA ERR-T 4019000400014
MEV MB MB 4019000400015
1. 140. 15. 4019000400016
ENDDATA 3 0 4019000400017
ENDSUBENT 16 0 4019000499999
ENDENTRY 4 0 4019099999999