ENTRY M0696 20061204 M041M069600000001 SUBENT M0696001 20061204 M041M069600100001 BIB 14 36 M069600100002 TITLE Photoneutron cross section measurements on the N = 82 M069600100003 nuclei 139La and 141Pr: Implications for p-process M069600100004 nucleosynthesis. M069600100005 AUTHOR (H.UTSUNOMIYA,A.MAKINAGA,S.GOKO,T.KAIHORI,H.AKIMUNE, M069600100006 T.YAMAGATA,M.OHTA,H.TOYOKAWA,S.MULLER,Y.-W.LUI, M069600100007 S.GORIELY) M069600100008 REFERENCE (J,PR/C,74,025806,2006) M069600100009 INSTITUTE (2JPNKON,2JPNAIS,2GERTHD,1USATAM,2BLGBRU) M069600100010 FACILITY (ESTRG,2JPNAIS) Electron storage ring TERAS at the M069600100011 National Institute of Advanced Industrial Science M069600100012 and Technology (AIST). M069600100013 INC-SOURCE (QMPH,COMPT) Laser Compton scattering (LCS). M069600100014 DETECTOR (PROPC) 3He proportional counters. M069600100015 METHOD (RINGR) 16 3He proportional counters embeded in a M069600100016 polyethilene; 8 of those located as inner ring. M069600100017 SAMPLE Metallic 139La (99.9 %) and 141Pr (99.9 %) targets 20 M069600100018 mm in diameter and 4 mm in thickness. M069600100019 ANALYSIS Direct measurement. Correction for g-quanta M069600100020 nonmonocromativity using the Taylor series M069600100021 presentation M069600100022 ERR-ANALYS (ERR-S) Statistical errors. M069600100023 (ERR-SYS) The systematic uncertainty is between 5.8 M069600100024 and 7.2 %, as determined by the neutron detection M069600100025 efficiency (5%), the number of incident LCS gamma-raysM069600100026 (3 %), and the electron beam size effect (< 4.2 %). M069600100027 COMMENT Cross sections of the 139La(g,n) and 141Pr(g,n) M069600100028 reactions were measured using quasi-monochromatic M069600100029 g-ray beams from laser Compton scattering. No M069600100030 evidence for sufficient thermonuclear p-process M069600100031 contribution to the rare odd-odd nuclide 138La was M069600100032 found. M069600100033 STATUS (TABLE) The data from Fig. 3 have been compilled at M069600100034 the Russia MSU SINP CDFE by V.Varlamov using M069600100035 tabulated data obtained from Dr. H.Utsunomiya M069600100036 through Dr. N.Otsuka. M069600100037 HISTORY (20061030C) M069600100038 ENDBIB 36 0 M069600100039 NOCOMMON 0 0 M069600100040 ENDSUBENT 39 0 M069600199999 SUBENT M0696002 20061204 M041M069600200001 BIB 2 5 M069600200002 REACTION (57-LA-139(G,N)57-LA-138,,SIG) M069600200003 FLAG (1.) The result of separate measurement. The M069600200004 difference comes from a little different shape of M069600200005 gamma energy spectrum due to the difference in M069600200006 electron beam size. M069600200007 ENDBIB 5 0 M069600200008 NOCOMMON 0 0 M069600200009 DATA 5 12 M069600200010 EN DATA ERR-S ERR-SYS FLAG M069600200011 MEV MB MB MB NO-DIM M069600200012 8.9 18. 1.4 1.2 1. M069600200013 8.9 16. 1.4 1. M069600200014 9.1 18. 1.1 1.1 M069600200015 9.2 24. 0.8 1.5 M069600200016 9.4 27. 0.9 1.6 M069600200017 9.6 34. 0.8 2.0 M069600200018 9.8 33. 1.2 1.9 M069600200019 10.1 43. 1.1 2.5 M069600200020 10.4 42. 0.9 2.5 M069600200021 10.8 50. 1.1 2.9 M069600200022 11.5 65. 1.2 3.8 M069600200023 12.3 111. 1.3 6.5 M069600200024 ENDDATA 14 0 M069600200025 ENDSUBENT 24 0 M069600299999 SUBENT M0696003 20061204 M041M069600300001 BIB 1 1 M069600300002 REACTION (59-PR-141(G,N)59-PR-140,,SIG) M069600300003 ENDBIB 1 0 M069600300004 NOCOMMON 0 0 M069600300005 DATA 4 9 M069600300006 EN DATA ERR-S ERR-SYS M069600300007 MEV MB MB MB M069600300008 9.5 27. 2. 2. M069600300009 9.7 30. 1.2 1.9 M069600300010 9.8 36. 0.9 2.2 M069600300011 10.0 32. 1.6 1.9 M069600300012 10.3 47. 1.1 2.8 M069600300013 10.6 49. 1. 2.9 M069600300014 11.0 54. 1.3 3.2 M069600300015 11.6 83. 1.5 4.9 M069600300016 12.4 128. 1.5 7.5 M069600300017 ENDDATA 11 0 M069600300018 ENDSUBENT 17 0 M069600399999 ENDENTRY 3 0 M069699999999