ENTRY C0060 20181206 C183C006000000001 SUBENT C0060001 20181206 C183C006000100001 BIB 14 36 C006000100002 TITLE Cross section for C12(p,pn)C11 C006000100003 AUTHOR (A.H.Rosenfeld,R.A.Swanson,S.D.Warshaw) C006000100004 REFERENCE (J,PR,103,413,1956) C006000100005 #doi:10.1103/PhysRev.103.413 C006000100006 INSTITUTE (1USACHI) C006000100007 FACILITY (SYNCY,1USACHI) The University of Chicago C006000100008 synchrocyclotron. C006000100009 SAMPLE Thin polyethylene foils, 4 mg/cm2. C006000100010 METHOD (BCINT,ACTIV) Thin ionization chamber with C006000100011 calibration by means of an Ilford G5 nuclear track C006000100012 plate. C006000100013 DETECTOR (PROPC) 4pi proportional counter continuously flushed C006000100014 with methane at atmospheric pressure. The counter was C006000100015 standardized with P32 or Na24 sources. C006000100016 DECAY-DATA (6-C-11,20.5MIN,B+,982.,1.) C006000100017 CORRECTION A guard foil was placed in contact with the foil to C006000100018 be counted. The guard served as a source of recoil C006000100019 carbon-11 nuclei, compensating for recoils lost C006000100020 through the back of the counted foil. The C006000100021 self-absorption in the foil was investigated and the C006000100022 correction was found to be less than 1% up to 4mg/cm2, C006000100023 then increasing by about 0.8% per mg/cm2. C006000100024 ERR-ANALYS (EN-ERR) Estimated from impact parameter of the C006000100025 escape orbit and from the range in copper. C006000100026 REL-REF (D,B0101002,W.E.Crandall+,J,PR,101,329,1956) Marked C006000100027 difference in self-absorption curves at small C006000100028 thicknesses. C006000100029 (D,,W.E.Burcham+,J,PPS/A,68,1001,1955) Burcham appears C006000100030 to overestimate the data. This may Be due to a large C006000100031 neutron flux around the Birmingham synchrocyclotron. C006000100032 STATUS Data taken from table in reference. C006000100033 HISTORY (19800214C) TWB C006000100034 (19840319A) reference date corrected. C006000100035 (20040310A) Converted to new date formats. C006000100036 (20181206A) BP: Updated facility, added doi and C006000100037 other information. C006000100038 ENDBIB 36 0 C006000100039 COMMON 2 3 C006000100040 EN EN-ERR C006000100041 MEV MEV C006000100042 461. 3. C006000100043 ENDCOMMON 3 0 C006000100044 ENDSUBENT 43 0 C006000199999 SUBENT C0060002 20181206 C183C006000200001 BIB 5 16 C006000200002 REACTION (6-C-0(P,X)6-C-11,,SIG) C006000200003 ERR-ANALYS (DATA-ERR) Estimated uncertainty due to counting C006000200004 statistics combined with an assigned 1% error to C006000200005 electrometer reading, foil weight, and beam C006000200006 fluctuation correction. C006000200007 FLAG (1.) 9.8 Mg weight foil. 3.16x10**9 protons. C006000200008 (2.) 9.9 Mg weight foil. 5.53x10**9 protons. C006000200009 (3.) 9.7 Mg weight foil. 4.81x10**9 protons. C006000200010 (4.) 9.7 Mg weight foil. 3.76x10**9 protons. C006000200011 (5.) 9.0 Mg weight foil. 11.12x10**9 protons. C006000200012 (6.) 9.2 Mg weight foil. 5.21x10**9 protons. C006000200013 STATUS (TABLE) Table II, page 417. C006000200014 HISTORY (19840319A) REL-REF date corrected. C006000200015 (19960304A) Average value moved to subentry 3, energy C006000200016 and some BIB information moved to subentry 1. C006000200017 (20181206A) BP: Updated status. C006000200018 ENDBIB 16 0 C006000200019 NOCOMMON 0 0 C006000200020 DATA 3 6 C006000200021 DATA DATA-ERR FLAG C006000200022 MB PER-CENT NO-DIM C006000200023 30.9 2.8 1. C006000200024 30.2 2.4 2. C006000200025 30.4 2.2 3. C006000200026 31.7 2.2 4. C006000200027 31.2 2.0 5. C006000200028 31.9 2.1 6. C006000200029 ENDDATA 8 0 C006000200030 ENDSUBENT 29 0 C006000299999 SUBENT C0060003 20181206 C183C006000300001 BIB 4 5 C006000300002 REACTION (6-C-0(P,X)6-C-11,,SIG,,,DERIV) Mean value. C006000300003 ANALYSIS Mean of data for 6 samples. C006000300004 STATUS (DEP,C0060002) C006000300005 (TABLE) Table II, page 417. C006000300006 HISTORY (20181206A) BP: Updated status, reaction string. C006000300007 ENDBIB 5 0 C006000300008 NOCOMMON 0 0 C006000300009 DATA 1 1 C006000300010 DATA C006000300011 MB C006000300012 31.05 C006000300013 ENDDATA 3 0 C006000300014 ENDSUBENT 13 0 C006000399999 ENDENTRY 3 0 C006099999999