ENTRY M0469 20040811 M044M046900000001 SUBENT M0469001 20040811 M044M046900100001 BIB 15 44 M046900100002 INSTITUTE (1USAUI) M046900100003 REFERENCE (J,PR,133,B117,1964) M046900100004 AUTHOR (B.L.BERMAN,L.J.KOESTER,J.H.SMITH) M046900100005 TITLE Photodisintegration of He3. M046900100006 FACILITY (BETAT,1USAUI) M046900100007 INC-SOURCE (BRST) M046900100008 SAMPLE The target chamber was constracted of brass, with M046900100009 thin alumiseal (a mylar-aluminium laminate) windows. M046900100010 The target chamber was filled with 3He gas at M046900100011 slightly less than atmospheric pressure, so that M046900100012 the chamber was a constant-volume device of 0.5 M046900100013 liter capacity. M046900100014 METHOD (COINC,PHD,PSD) Proton-deuteron coincidencies. M046900100015 DETECTOR (SCIN) Two CsI(Tl) crystals. M046900100016 PART-DET (P) M046900100017 (D) M046900100018 ANALYSIS Coincidencies were demanded between the proton and M046900100019 deuteron from the two-body 3He disintegration. The M046900100020 particle energies were determined by pulse-height M046900100021 measurement, and electrons were rejected by pulse- M046900100022 shape analysis. The yield was obtained from the M046900100023 corrected numbers of p-d coincidencies and then was M046900100024 used for obtaining the differential cross section M046900100025 for two-body 3He disintegration. The three-body M046900100026 3He disintegration cross section was obtained with M046900100027 the aid of p-p events. M046900100028 ERR-ANALYS (DATA-ERR) Statistical and total errors are presented. M046900100029 Systematic error was estimated to be about M046900100030 5%. M046900100031 COMMENT The 90-degrees photodisintegration cross sections for M046900100032 3He were measured for incident photon energies M046900100033 between 8.5 and 21.5 MeV by detecting proton-deuteron M046900100034 coincidencies in CsI(Tl) scintillators immersed in M046900100035 1 atm gas. The source of gamma-quanta was the M046900100036 Bremsstrahlung beam of the University of Illinois M046900100037 22 MeV betatron. The particle energies were M046900100038 determined by pulse-height measurement, and electrons M046900100039 were rejected by pulse-shape analysis. M046900100040 STATUS (TABLE) M046900100041 HISTORY (19910218C) M046900100042 (20040811A) Converted to new date format, lower case. M046900100043 Error data headings updated. SAMPLE text corrected. M046900100044 (20071026A) Corrected by V.Varlamov: REFERENCE, M046900100045 REACTION, DATa-ERR. M046900100046 ENDBIB 44 0 M046900100047 COMMON 1 3 M046900100048 ERR-SYS M046900100049 PER-CENT M046900100050 5. M046900100051 ENDCOMMON 3 0 M046900100052 ENDSUBENT 51 0 M046900199999 SUBENT M0469002 20040811 M044M046900200001 BIB 1 1 M046900200002 REACTION (2-HE-3(G,P)1-H-2,,DA,,BRS) M046900200003 ENDBIB 1 0 M046900200004 COMMON 1 3 M046900200005 ANG M046900200006 ADEG M046900200007 90. M046900200008 ENDCOMMON 3 0 M046900200009 DATA 3 13 M046900200010 EN DATA DATA-ERR M046900200011 MEV MB/SR MB/SR M046900200012 9. 0.0800 0.0029 M046900200013 10. 0.0908 0.0034 M046900200014 11. 0.0916 0.0038 M046900200015 12. 0.0888 0.0041 M046900200016 13. 0.0845 0.0044 M046900200017 14. 0.0782 0.0044 M046900200018 15. 0.0771 0.0053 M046900200019 16. 0.0648 0.0050 M046900200020 17. 0.0599 0.0050 M046900200021 18. 0.0597 0.0052 M046900200022 19. 0.0576 0.0055 M046900200023 20. 0.0575 0.0060 M046900200024 21. 0.0427 0.0063 M046900200025 ENDDATA 15 0 M046900200026 ENDSUBENT 25 0 M046900299999 SUBENT M0469003 20040811 M044M046900300001 BIB 1 5 M046900300002 REACTION (2-HE-3(G,N+P)1-H-1,,DA/DA,P+P,BRS/REL) M046900300003 Double-differential three-body cross section M046900300004 for reaction when the two outgoing protons are M046900300005 emitted back-to-back (for first proton the angle M046900300006 is 180 degrees and for second 0 degrees). M046900300007 ENDBIB 5 0 M046900300008 COMMON 1 3 M046900300009 ANG-RL M046900300010 ADEG M046900300011 180. M046900300012 ENDCOMMON 3 0 M046900300013 DATA 3 7 M046900300014 EN DATA DATA-ERR M046900300015 MEV ARB-UNITS ARB-UNITS M046900300016 9. 0.0017 0.0005 M046900300017 11. 0.0261 0.0044 M046900300018 13. 0.0540 0.0066 M046900300019 15. 0.0845 0.0096 M046900300020 17. 0.0892 0.0099 M046900300021 19. 0.0638 0.0087 M046900300022 21. 0.0540 0.0092 M046900300023 ENDDATA 9 0 M046900300024 ENDSUBENT 23 0 M046900399999 ENDENTRY 3 0 M046999999999