ENTRY C1979 20130208 C129C197900000001 SUBENT C1979001 20130208 C129C197900100001 BIB 13 38 C197900100002 TITLE N15(p,p2n)N13 Reaction Induced by Protons of Energy C197900100003 0.4 to 6.2 BeV C197900100004 AUTHOR (L.C.Sah) C197900100005 REFERENCE (P,UCRL-9394,1960) C197900100006 INSTITUTE (1USABRK) C197900100007 FACILITY (SYNCY,1USABRK) C197900100008 (SYNCH,1USABRK) C197900100009 DETECTOR (PROPC) An end window, methane gas-flow, proportional C197900100010 beta counter. C197900100011 METHOD (ACTIV,BSPEC,INTB,STTA) The boron nitride powder was C197900100012 held in place by two aluminum foils. Two additional C197900100013 aluminum foils were placed behind the target. All C197900100014 irradiation between 0.4 and 0.72 GeV were performed C197900100015 at the Berkeley 184-in synchrocyclotron while those C197900100016 between 2.0 and 6.2 GeV were carried out at Berkeley C197900100017 Bevatron. C197900100018 DECAY-DATA (7-N-13,10.MIN,B+) C197900100019 ANALYSIS (DECAY) The number of counts per minute, at the end C197900100020 of bombardment, was obtained from the decay curve by C197900100021 resolution of the 10 min N-13 from the other C197900100022 activities (mainly 20.5-min C-11) detected. This was C197900100023 done by making the decay curve analysis first by hand C197900100024 and then with the aid of an IBM-704 least square C197900100025 program called "Frenic". The least square program C197900100026 gave the number of counts of each component and its C197900100027 standard deviation. C197900100028 ERR-ANALYS The following systematic errors have been C197900100029 identified: C197900100030 (ERR-1) Al-27(p,3pn)Na-24 reaction at 6% C197900100031 (ERR-2) Overall detection coefficient at 2%. C197900100032 (ERR-3,1.,8.) Decay curve analysis C197900100033 (ERR-4,1.,10.) Target thickness uniformity and energy C197900100034 spread of proton beam: 10% for synchrocyclotron C197900100035 and 1% for bevatron. C197900100036 MONITOR (13-AL-27(P,X)11-NA-24,,SIG) reaction cross section is C197900100037 10.7 +- 0.6 mb from 0.4 to 6.2 GeV. C197900100038 MONIT-REF ((MONIT),J.B.Cumming+,J,PR,111,1386,1958) C197900100039 HISTORY (20130208C) BP C197900100040 ENDBIB 38 0 C197900100041 COMMON 2 3 C197900100042 ERR-1 ERR-2 C197900100043 PER-CENT PER-CENT C197900100044 6. 2. C197900100045 ENDCOMMON 3 0 C197900100046 ENDSUBENT 45 0 C197900199999 SUBENT C1979002 20130208 C129C197900200001 BIB 4 10 C197900200002 REACTION 1(7-N-14(P,X)7-N-13,,SIG) C197900200003 2(7-N-14(P,X)7-N-13,,SIG) Repeated bombardment. C197900200004 3(7-N-14(P,X)7-N-13,,SIG) Repeated bombardment. C197900200005 STATUS (TABLE) Table 3, page 21. C197900200006 FLAG (1.) Pressed pellet target. C197900200007 SAMPLE Boron nitride target (B3N3). The thickness of the C197900200008 powder was 20 to 30 mg/cm2. The pellet target serves C197900200009 merely to check the values of cross sections because C197900200010 a powder does not provide as uniform a target and C197900200011 source for beta counting as a pellet target. C197900200012 ENDBIB 10 0 C197900200013 NOCOMMON 0 0 C197900200014 DATA 5 6 C197900200015 EN DATA 1FLAG DATA 2DATA 3 C197900200016 GEV MB NO-DIM MB MB C197900200017 0.4 5.2 5.3 C197900200018 0.6 4.1 5.4 C197900200019 0.72 3.8 1. 4.1 4.6 C197900200020 2.0 5.1 1. C197900200021 4.1 5.6 5.7 C197900200022 6.2 4.8 4.8 C197900200023 ENDDATA 8 0 C197900200024 ENDSUBENT 23 0 C197900299999 SUBENT C1979003 20130208 C129C197900300001 BIB 4 11 C197900300002 REACTION 1(7-N-15(P,X)7-N-13,,SIG) C197900300003 2(7-N-15(P,X)7-N-13,,SIG) Repeated bombardment. C197900300004 3(7-N-15(P,X)7-N-13,,SIG) Repeated bombardment. C197900300005 STATUS (TABLE) Table 4, page 21. C197900300006 FLAG (1.) Pressed pellet target. C197900300007 SAMPLE (7-N-15,ENR=0.9382) Boron nitride target (B3N3). The C197900300008 thickness of the powder was 20 to 30 mg/cm2. The C197900300009 pellet target serves merely to check the values of C197900300010 cross sections because a powder does not provide as C197900300011 uniform a target and source for beta counting as a C197900300012 pellet target. C197900300013 ENDBIB 11 0 C197900300014 NOCOMMON 0 0 C197900300015 DATA 5 7 C197900300016 EN DATA 1DATA 2FLAG DATA 3 C197900300017 GEV MB MB NO-DIM MB C197900300018 0.4 1.8 2.4 C197900300019 0.6 1.9 2.4 1. 2.7 C197900300020 0.7 1.6 C197900300021 0.72 2.3 3.1 1. C197900300022 2.0 1.7 2.0 C197900300023 4.1 3.3 3.5 3.7 C197900300024 6.2 2.2 2.2 1. C197900300025 ENDDATA 9 0 C197900300026 ENDSUBENT 25 0 C197900399999 ENDENTRY 3 0 C197999999999