ENTRY C2719 20220204 C214C271900000001 SUBENT C2719001 20220204 C214C271900100001 BIB 11 47 C271900100002 TITLE The cross section for reaction 20(30,240)n C271900100003 AUTHOR (C.P.Baker,M.G.Holloway,L.D.P.King,R.E.Schreiber) C271900100004 REFERENCE (R,LAMS-11,1943) C271900100005 REL-REF (M,C2718001,C.P.Baker+,R,LAMS-2,1943) The experimental C271900100006 setup and procedures. C271900100007 INSTITUTE (1USAPUR) C271900100008 FACILITY (CYCLO,1USAPUR) C271900100009 INC-SPECT The source of the tritium used for bombarding was 60 C271900100010 cm3 (at NTP) of gas containing 0.025% 30's. C271900100011 SAMPLE The deuterium gas used in the ionization chamber. A C271900100012 target about 0.2 MeV thick. C271900100013 DETECTOR (IOCH) Disintegration (reaction products) chamber. C271900100014 ERR-ANALYS Errors in the measurement of the cross section involve C271900100015 errors in C271900100016 (ERR-S,3.,24.) the number of disintegrations observed, C271900100017 the standard error arising from the statistical nature C271900100018 of the number of disintegrations observed, the standardC271900100019 error arising from the statistical nature of the C271900100020 number of disintegrations observed varied from 3 to 6% C271900100021 for all except the data of Aug. 20 and 21, for which C271900100022 the best established points have an error of 7% and theC271900100023 poorest 12 and 24%, C271900100024 (ERR-1) the number of target particles, the errors in C271900100025 the determination of the number of target particles areC271900100026 the same as those given in the 230 report in which an C271900100027 error of 1.1% was assigned, C271900100028 (ERR-2) A very subjective estimate of the uncertainty C271900100029 is 7%, C271900100030 (ERR-3,1.,3.) the solid angle in which disintegrations C271900100031 were detected, since for measurements in the 90 degreesC271900100032 direction the solid angle has not been finally C271900100033 calculated and since in the forward direction, because C271900100034 of the presence of short-range particles, the solid C271900100035 angle is an as yet unknown function of energy, no C271900100036 attempt will be made to assign errors to the C271900100037 determination of solid angle. The measurements of the C271900100038 dimensions of the chamber were made with an error of 1%C271900100039 and with an uncertainty of 3%. C271900100040 (ERR-4), indirectly, the determination of the energy. C271900100041 The error in the determination of the incident energy C271900100042 was estimated as 3.5 percent in the 230 report. C271900100043 An attempt will be made to assign to these quantities aC271900100044 "probable" error and an uncertainty. The error is our C271900100045 best estimate of the errors in the measurements, and C271900100046 the uncertainty is the limit within which we believe C271900100047 all errors lie. C271900100048 HISTORY (20220204C) BP C271900100049 ENDBIB 47 0 C271900100050 COMMON 3 3 C271900100051 ERR-1 ERR-2 ERR-4 C271900100052 PER-CENT PER-CENT PER-CENT C271900100053 1.1 7.0 3.5 C271900100054 ENDCOMMON 3 0 C271900100055 ENDSUBENT 54 0 C271900199999 SUBENT C2719002 20220204 C214C271900200001 BIB 3 9 C271900200002 REACTION (1-H-2(T,N)2-HE-4,,SIG) C271900200003 METHOD The measurements made in a cone of approximately 30 C271900200004 degree about the direction of the beam give a thick C271900200005 target cross section. These values are subject to C271900200006 final calculations of the solid angles. C271900200007 STATUS (PRELM) C271900200008 (TABLE) page 1. C271900200009 (COREL,C2719003) Measured in zone of right angles to C271900200010 beam direction C271900200011 ENDBIB 9 0 C271900200012 NOCOMMON 0 0 C271900200013 DATA 2 2 C271900200014 EN DATA C271900200015 MEV B C271900200016 0.32 2.1 C271900200017 0.9 0.6 C271900200018 ENDDATA 4 0 C271900200019 ENDSUBENT 18 0 C271900299999 SUBENT C2719003 20220204 C214C271900300001 BIB 3 8 C271900300002 REACTION (1-H-2(T,N)2-HE-4,,SIG) C271900300003 METHOD Measurements made in a zone at right angles to the C271900300004 direction of the beam. These values are subject to C271900300005 final calculations of the solid angles. C271900300006 STATUS (PRELM) C271900300007 (TABLE) page 1. C271900300008 (COREL,C2719002) Measured in cone of about 30 deg. C271900300009 about beam direction C271900300010 ENDBIB 8 0 C271900300011 NOCOMMON 0 0 C271900300012 DATA 2 2 C271900300013 EN DATA C271900300014 MEV B C271900300015 0.32 2.8 C271900300016 0.9 0.7 C271900300017 ENDDATA 4 0 C271900300018 ENDSUBENT 17 0 C271900399999 ENDENTRY 3 0 C271999999999