ENTRY 22496 20200805 22902249600000001 SUBENT 22496001 20200805 22902249600100001 BIB 13 33 2249600100002 TITLE Experimental determination of the 14N(n,p)14C reaction2249600100003 cross section for thermal neutrons 2249600100004 AUTHOR (J.Wagemans,C.Wagemans,G.Goeminne,P.Geltenbort) 2249600100005 REFERENCE (J,PR/C,61,064601,2000) Main reference 2249600100006 INSTITUTE (2ZZZGEL) J.Wagemans 2249600100007 (2BLGGHT) C.Wagemans, G.Goeminne 2249600100008 (2FR ILL) Geltenbort 2249600100009 FACILITY (REAC,2FR ILL) High flux reactor Institute Laue- 2249600100010 Langevin, Grenoble, France 2249600100011 INC-SOURCE (THCOL) Curved neutron guide H22D 2249600100012 INC-SPECT Thermal neutron flux at the sample position is near 2249600100013 5.E+8 n/cm2/sec, energy distribution of neutron 2249600100014 approaches Maxwellian with T=210K, mean energy 2249600100015 18 milli-eV. The energy calibration was done by means 2249600100016 of 10B(n,alpha)7Li and 6Li(n,alpha)3H reactions 2249600100017 DETECTOR (SIBAR) Two silicon surface barrier detectors. First 2249600100018 one is 29 micro-m thick, has surface 150 mm2, 2249600100019 40 keV resolution. Second one is 60 micro-m thick, 2249600100020 surface 150 mm2, 25 keV resolution. 2249600100021 ASSUMED (ASSUM,5-B-10(N,A)3-LI-7,,SIG) Transition to first 2249600100022 and second energy levels of 7Li 2249600100023 SAMPLE A variety of 14n samples was used - adenine C5-H5-N5 2249600100024 containing 51.6% of 14N evaporated on thin aluminium 2249600100025 backing, and polyimide C22-H10-O5-N2 foils containing 2249600100026 7.30% of 14N. 2249600100027 CORRECTION Corrections were done for protons coming from air 2249600100028 nitrogen in the camera, for the interaction of neutr. 2249600100029 With boron impurities in samples 2249600100030 ERR-ANALYS (DATA-ERR) Total error, structure is not given 2249600100031 HISTORY (20001219C) + + Compiled by S.M. 2249600100032 (20001219U) Last checking has been done. 2249600100033 (20200805A) SD: EN-MEAN=0.018 eV -> 0.0253 eV (remark 2249600100034 from Dr.C.Wagemans). Corrections in all Subents. 2249600100035 ENDBIB 33 0 2249600100036 COMMON 2 3 2249600100037 EN ASSUM 2249600100038 EV B 2249600100039 0.0253 3842. 2249600100040 ENDCOMMON 3 0 2249600100041 ENDSUBENT 40 0 2249600199999 SUBENT 22496002 20200805 22902249600200001 BIB 5 19 2249600200002 REACTION 1(7-N-14(N,P)6-C-14,,SIG) 2249600200003 2(7-N-14(N,P)6-C-14,,SIG) 2249600200004 3(7-N-14(N,P)6-C-14,,SIG) 2249600200005 4(7-N-14(N,P)6-C-14,,SIG) 2249600200006 5(7-N-14(N,P)6-C-14,,SIG) 2249600200007 6(7-N-14(N,P)6-C-14,,SIG) 2249600200008 7(7-N-14(N,P)6-C-14,,SIG) 2249600200009 MONITOR ((MONIT)92-U-235(N,F),,SIG) Monitor value is 2249600200010 given in ENDF-B6 data file 2249600200011 SAMPLE 1.Adenine, thickness 204.0+-1.7 mu-g/cm2 2249600200012 2.adenine, thickness 94.3+-1.7 mu-g/cm2 2249600200013 3.adenine, thickness 70.7+-1.7 mu-g/cm2 2249600200014 4.polyimide , thickness 64.2+-1.3 mu-g/cm2 2249600200015 5.polyimide , thickness 60.5+-1.2 mu-g/cm2 2249600200016 6.polyimide , thickness 55.0+-1.7 mu-g/cm2 2249600200017 7.polyimide , thickness 52.5+-1.6mu-g/cm2 2249600200018 STATUS (TABLE) From table 2 from Phys.Rev.,C61(2000)064601 2249600200019 HISTORY (20200805A) SD: SF8=MXW deleted (1/v law assumed) from 2249600200020 REACTION code. STATUS updated. ERR-T -> DATA-ERR. 2249600200021 ENDBIB 19 0 2249600200022 COMMON 2 3 2249600200023 MONIT MONIT-ERR 2249600200024 B B 2249600200025 584.25 1.1 2249600200026 ENDCOMMON 3 0 2249600200027 DATA 14 1 2249600200028 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 32249600200029 DATA 4DATA-ERR 4DATA 5DATA-ERR 5DATA 6DATA-ERR 62249600200030 DATA 7DATA-ERR 7 2249600200031 B B B B B B 2249600200032 B B B B B B 2249600200033 B B 2249600200034 1.98 0.04 1.88 0.05 2.02 0.062249600200035 1.97 0.06 1.95 0.05 1.81 0.082249600200036 1.87 0.08 2249600200037 ENDDATA 9 0 2249600200038 ENDSUBENT 37 0 2249600299999 SUBENT 22496003 20200805 22902249600300001 BIB 4 8 2249600300002 REACTION (7-N-14(N,P)6-C-14,,SIG) 2249600300003 ANALYSIS Data was obtained from the slope of the fitting 2249600300004 straight line giving dependence of proton counting 2249600300005 from the 14N mass 2249600300006 STATUS (TABLE) Text on p.064601-3 of Phys.Rev.,C61(2000)0646012249600300007 (DEP,22496002) 2249600300008 HISTORY (20200805A) SD: SF8=MXW deleted (1/v law assumed) from 2249600300009 REACTION code. STATUS updated. ERR-T -> DATA-ERR. 2249600300010 ENDBIB 8 0 2249600300011 NOCOMMON 0 0 2249600300012 DATA 2 1 2249600300013 DATA DATA-ERR 2249600300014 B B 2249600300015 1.93 0.05 2249600300016 ENDDATA 3 0 2249600300017 ENDSUBENT 16 0 2249600399999 SUBENT 22496004 20200805 22902249600400001 BIB 5 6 2249600400002 REACTION (8-O-17(N,A)6-C-14,,SIG) 2249600400003 MONITOR ((MONIT)7-N-14(N,P)6-C-14,,SIG) 2249600400004 MONIT-REF (22496003,J.Wagemans+,J,PR/C,61,064601,2000) 2249600400005 STATUS (TABLE) Appendix of Phys.Rev.,C61(2000)064601 2249600400006 HISTORY (20200805A) SD: SF8=MXW deleted (1/v law assumed) from 2249600400007 REACTION code. STATUS updated. ERR-T -> DATA-ERR. 2249600400008 ENDBIB 6 0 2249600400009 NOCOMMON 0 0 2249600400010 DATA 4 1 2249600400011 DATA DATA-ERR MONIT MONIT-ERR 2249600400012 MB MB B B 2249600400013 257. 10. 193. 0.05 2249600400014 ENDDATA 3 0 2249600400015 ENDSUBENT 14 0 2249600499999 ENDENTRY 4 0 2249699999999