ENTRY M0446 20220114 M117M044600000001 SUBENT M0446001 20220114 M117M044600100001 BIB 12 37 M044600100002 TITLE Deexcitation g-rays following the photodisintegration M044600100003 of O-17. M044600100004 AUTHOR (G.V.O'Rielly,D.Zubanov,M.N.Thompson) M044600100005 REFERENCE (J,PR/C,40,59,1989) M044600100006 INSTITUTE (3AULAML) M044600100007 FACILITY (BETAT,3AULAML) M044600100008 INC-SOURCE (BRST) M044600100009 METHOD (EXTB) M044600100010 SAMPLE A 120-g sample of water, isotopically enriched to M044600100011 48.6% in O-17, was contained in a thin-walled lucite M044600100012 cylinder 3.81 cm in diameter, and 10.2 cm long. M044600100013 DETECTOR (GELI) Thin Ge(Li) low-energy photon detector, with M044600100014 the data-acquisition system enabled to count for 70 M044600100015 microsec starting 8.5 microsec after the beam burst. M044600100016 ERR-ANALYS (ERR-S) The statistical errors. M044600100017 (ERR-SYS) The systematic errors. M044600100018 COMMENT Bremsstrahlung-weighted integrated cross sections for M044600100019 photoproton and photoneutron emission from O-17 to M044600100020 excited residual states in N-16 and O-16 have been M044600100021 measured by detecting the deexcitation g-rays M044600100022 emitted from these states in the residual nuclei. M044600100023 About 90% of photoproton emission from O-17 M044600100024 populates the ground state (2-) and the 0.298 MeV M044600100025 level (3-) in N-16. The remaining photoproton M044600100026 emission lead to the 0.120 MeV (0-) and 0.397 MeV M044600100027 (1-) levels. For the O-17(g,n)O-16 reaction, the M044600100028 results show that emission to bound states in o-16 M044600100029 is predominantly to the 0-16 ground state (0+), with M044600100030 4% of the decay from O-17 giant dipole resonance M044600100031 going to the 6.13 MeV (3-) excited state; population M044600100032 of other bound states is not observed. M044600100033 HISTORY (19910218C) M044600100034 (20170125A) Correced by V.Varlamov: dates, ERR-ANALYS, M044600100035 STATUS, COMMON, REACTION, SUBENT 006 deleted because M044600100036 it gives the ratio of data from SUBENTS 004 and 005. M044600100037 (20220114A) Corrected by V.Varlamov: PART-DET, STATUS, M044600100038 ERR-ANALYS in SUBENTs 004, 005. M044600100039 ENDBIB 37 0 M044600100040 NOCOMMON 0 0 M044600100041 ENDSUBENT 40 0 M044600199999 SUBENT M0446002 20220114 M117M044600200001 BIB 6 15 M044600200002 REACTION (8-O-17(G,P)7-N-16,,INT,,BRA) M044600200003 METHOD (ACTIV) M044600200004 DECAY-DATA (7-N-16,7.13SEC,DG,6130.0,0.67) M044600200005 ANALYSIS The number of deexcitation g-rays detected at a M044600200006 particular bremsstrahlung end-point energy reflects M044600200007 the differential cross section over the energy M044600200008 region up to this end-point energy weighted by M044600200009 number of photons at each energy in bremsstrahlung M044600200010 spectra. So the differential cross section and the M044600200011 integrated cross sections obtained are of M044600200012 "bremsstrahlung-weighted" type. M044600200013 STATUS (TABLE) Data from table 1 of Phys.Rev.,C,40(1989)59. M044600200014 HISTORY (20170125) Corrected by V.Varlamov: REACTION, M044600200015 STATUS, METHOD, DECAY-DATA, ERR-SYS, ERR-S. M044600200016 (20220114U) Corrected by V.Varlamov: STATUS. M044600200017 ENDBIB 15 0 M044600200018 COMMON 1 3 M044600200019 ERR-SYS M044600200020 PER-CENT M044600200021 17. M044600200022 ENDCOMMON 3 0 M044600200023 DATA 3 4 M044600200024 EN-MAX DATA ERR-S M044600200025 MEV MB*MEV MB*MEV M044600200026 16.5 3.1 .6 M044600200027 18.5 5.4 .5 M044600200028 21.5 10.9 .6 M044600200029 28. 37. 3. M044600200030 ENDDATA 6 0 M044600200031 ENDSUBENT 30 0 M044600299999 SUBENT M0446003 20220114 M117M044600300001 BIB 4 13 M044600300002 REACTION (8-O-17(G,P)7-N-16,PAR,INT/DA,G,4PI/BRA) M044600300003 ANALYSIS The number of deexcitation g-rays detected at a M044600300004 particular bremsstrahlung end-point energy reflects M044600300005 the differential cross section over the energy M044600300006 region up to this end-point energy weighted by M044600300007 number of photons at each energy in bremsstrahlung M044600300008 spectra. So the differential cross section and the M044600300009 integrated cross sections obtained are of M044600300010 "bremsstrahlung-weighted" type. M044600300011 STATUS (TABLE) Data from table 1 of Phys.Rev.,C,40(1989)59. M044600300012 HISTORY (20170125) Corrected by V.Varlamov: REACTION, ANGLE, M044600300013 ERR-SYS, ERR-S, STATUS. M044600300014 (20220114U) Corrected by V.Varlamov: STATUS. M044600300015 ENDBIB 13 0 M044600300016 COMMON 3 3 M044600300017 E ANG ERR-SYS M044600300018 KEV ADEG PER-CENT M044600300019 120.0 135.0 8.0 M044600300020 ENDCOMMON 3 0 M044600300021 DATA 3 4 M044600300022 EN-MAX DATA ERR-S M044600300023 MEV MB*MEV MB*MEV M044600300024 16.5 .29 .14 M044600300025 18.5 .76 .24 M044600300026 21.5 .94 .17 M044600300027 28. 3.93 .33 M044600300028 ENDDATA 6 0 M044600300029 ENDSUBENT 28 0 M044600399999 SUBENT M0446004 20220114 M117M044600400001 BIB 5 19 M044600400002 REACTION (8-O-17(G,P)7-N-16,,INT,,BRS) M044600400003 ANALYSIS Data derived by assuming the (1) ratio of the M044600400004 bremssstrahlung-weighted integrated cross section to M044600400005 the integrated cross section in D.Zubanov et al., M044600400006 University of Melbourne Report UM-P-89/43,1989, and M044600400007 (2) the partial and total (g,p) cross section have M044600400008 the same shape. M044600400009 ERR-ANALYS (ERR-1) Systematic uncertainty due to the assumption M044600400010 that the partial and total (g,p) cross sections have M044600400011 the same shape. M044600400012 It was estimated that assumption of similar shapes M044600400013 introduces a systematic uncertainty of about 5%. M044600400014 STATUS (TABLE) Data from table 2 of Phys.Rev.,C,40(1989)59. M044600400015 (DEP,M0446002) Bremsstrahlung-weighted cross section M044600400016 integral. M044600400017 HISTORY (20170125) Corrected by V.Varlamov: REACTION, M044600400018 ERR-SYS, ERR-S, STATUS. M044600400019 (20220114A) Corrected by V.Varlamov: ERR-ANALYS, M044600400020 STATUS. M044600400021 ENDBIB 19 0 M044600400022 COMMON 2 3 M044600400023 ERR-SYS ERR-1 M044600400024 PER-CENT PER-CENT M044600400025 17. 5. M044600400026 ENDCOMMON 3 0 M044600400027 DATA 3 4 M044600400028 EN-MAX DATA ERR-S M044600400029 MEV MB*MEV MB*MEV M044600400030 16.5 1.4 .3 M044600400031 18.5 2.4 .2 M044600400032 21.5 5.6 .3 M044600400033 28. 21. 2. M044600400034 ENDDATA 6 0 M044600400035 ENDSUBENT 34 0 M044600499999 SUBENT M0446005 20220114 M117M044600500001 BIB 5 19 M044600500002 REACTION (8-O-17(G,P)7-N-16,PAR,INT/DA,G,4PI/BRS) M044600500003 ANALYSIS Data derived by assuming the (1) ratio of the M044600500004 bremssstrahlung-weighted integrated cross section to M044600500005 the integrated cross section in D.Zubanov et al., M044600500006 University of Melbourne Report UM-P-89/43,1989, and M044600500007 (2) the partial and total (g,p) cross section have M044600500008 the same shape. M044600500009 ERR-ANALYS (ERR-1) Systematic uncertainty due to the assumption M044600500010 that the partial and total (g,p) cross sections have M044600500011 the same shape. M044600500012 It was estimated that assumption of similar shapes M044600500013 introduces a systematic uncertainty of about 5%. M044600500014 STATUS (TABLE) Data from table 2 of Phys.Rev.,C,40(1989)59. M044600500015 (DEP,M0446003) Bremsstrahlung-weighted cross section M044600500016 integral. M044600500017 HISTORY (20170125) Corrected by V.Varlamov: REACTION, ANGLE, M044600500018 ERR-SYS, ERR-S, STATUS. M044600500019 (20220114A) Corrected by V.Varlamov: ERR-ANALYS, M044600500020 STATUS. M044600500021 ENDBIB 19 0 M044600500022 COMMON 4 3 M044600500023 E ANG ERR-SYS ERR-1 M044600500024 KEV ADEG PER-CENT PER-CENT M044600500025 120.0 135.0 13.0 5.0 M044600500026 ENDCOMMON 3 0 M044600500027 DATA 3 4 M044600500028 EN-MAX DATA ERR-S M044600500029 MEV MB*MEV MB*MEV M044600500030 16.5 .13 .06 M044600500031 18.5 .34 .11 M044600500032 21.5 .47 .09 M044600500033 28. 2.30 .02 M044600500034 ENDDATA 6 0 M044600500035 ENDSUBENT 34 0 M044600599999 NOSUBENT M0446006 20170125 M087M044600600001 ENDENTRY 6 0 M044699999999