ENTRY 23572 20200505 22872357200000001
SUBENT 23572001 20200505 22872357200100001
BIB 10 20 2357200100002
TITLE Measurements on radioactive krypton isotopes from 2357200100003
fission after mass-spectrographic separation 2357200100004
AUTHOR (J.Koch, O.Kofoed-Hansen,P.Kristensen, W.Drost-Hansen) 2357200100005
REFERENCE (J,PR,76,279,1949) 2357200100006
INSTITUTE (2DENCOP) 2357200100007
FACILITY (CYCLO,2DENCOP) 2357200100008
INC-SOURCE (D-BE) 2357200100009
SAMPLE Ten kg of uranium oxide powder , mixed with a small 2357200100010
portion of ammonium carbonate, placed in a glass 2357200100011
container, surrounded by a few cm of paraffin. 2357200100012
Container was inserted as close as possible to 2357200100013
neutron source. Irradiation time ~3 hr. 2357200100014
METHOD (CHSEP,ASEP) Inert gases from U were pumped off by a 2357200100015
Toepler pump, using the gas given off by the ammonium 2357200100016
carbonate (NH(3), CO(2), H(2)O) as carrier of activity.2357200100017
Isotopes separation was started in mass-spectrograph 2357200100018
~1/2 hr after stopping of cyclotron. 2357200100019
Mass-spectrograph run time ~1 hr. 2357200100020
ANALYSIS (DECAY) Formulas 1, 2 were used. 2357200100021
HISTORY (20200415C) M.M. 2357200100022
ENDBIB 20 0 2357200100023
NOCOMMON 0 0 2357200100024
ENDSUBENT 23 0 2357200199999
SUBENT 23572002 20200505 22872357200200001
BIB 6 17 2357200200002
REACTION ((92-U-0(N,F)ELEM/MASS,CUM,FY,,SPA)/ 2357200200003
(92-U-0(N,F)36-KR-88,CUM,FY,,SPA)) 2357200200004
DECAY-DATA (36-KR-88,2.77HR) 2357200200005
(36-KR-87,1.30HR,B,3200.) 2357200200006
Max.energy 3.2+-0.3 MeV, measured. 2357200200007
(36-KR-85-M,4.36HR,B,750.) 2357200200008
Max energy 0.75+-0.1 MeV, measured. 2357200200009
Measured HL with accuracy ~2%. 2357200200010
ANALYSIS Average for two series of measurements. 2357200200011
Contribution of ling-lived Kr-85 was neglected. 2357200200012
ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 2357200200013
article. 2357200200014
STATUS (TABLE) Table II of Physical Review,v.76,p.279,1949 2357200200015
COMMENT Of compiler. In the article there is no information 2357200200016
about incident neutron energy, about energy of 2357200200017
deuterons at cyclotron. EN-DUMMY was supposed by 2357200200018
compiler as 1.MeV. 2357200200019
ENDBIB 17 0 2357200200020
COMMON 2 3 2357200200021
EN-DUMMY ELEMENT 2357200200022
MEV NO-DIM 2357200200023
1. 36. 2357200200024
ENDCOMMON 3 0 2357200200025
DATA 4 2 2357200200026
MASS ISOMER DATA DATA-ERR 2357200200027
NO-DIM NO-DIM NO-DIM NO-DIM 2357200200028
87. 0.70 0.15 2357200200029
85. 1. 0.33 0.10 2357200200030
ENDDATA 4 0 2357200200031
ENDSUBENT 30 0 2357200299999
ENDENTRY 2 0 2357299999999