ENTRY M0478 20160220 M082M047800000001 SUBENT M0478001 20160220 M082M047800100001 BIB 14 37 M047800100002 TITLE Photodisintegration of He-3. M047800100003 AUTHOR (B.L.Berman,L.J.Koester Jr,J.H.Smith) M047800100004 REFERENCE (J,PRL,10,527,1963) M047800100005 INSTITUTE (1USAUI) M047800100006 FACILITY (BETAT,1USAUI) M047800100007 INC-SOURCE (QMPH,KINDT) The source of gamma-quanta is M047800100008 bremsstrahlung but in case of full geometry the M047800100009 energy of photon which produced each event is M047800100010 exactly the sum of the proton and deuteron energies M047800100011 plus 5.49 MeV (the threshold of He-3(g,p) reaction). M047800100012 METHOD (COINC) M047800100013 DETECTOR (SCIN) CsI(Tl) crystals. M047800100014 SAMPLE The brass chamber with thin Alumiseal windows M047800100015 was filled with He-3 gas at slightly less than M047800100016 atmospheric pressure. M047800100017 PART-DET (P) M047800100018 (D) M047800100019 ANALYSIS The cross section was determined from the number M047800100020 of proton-deuteron coincidence events by dividing M047800100021 of this number by corresponding number of photons M047800100022 in the bremsstrahlung spectrum. M047800100023 ERR-ANALYS (ERR-S) Statistical errors. M047800100024 (ERR-SYS) Systematic errors are only estimated M047800100025 to be about 5%. M047800100026 COMMENT The 90-degrees differential cross section for the M047800100027 photodisintegration of He-3 into a proton and a M047800100028 deuteron has been measured for incident photon M047800100029 energies between 8.5 and 22 MeV. The fact that the M047800100030 incident photon momentum is small at these energies M047800100031 provides a unique signature for this process. The M047800100032 proton and deuteron are emitted nearly back to back M047800100033 with equal momenta; hence the energy of the proton M047800100034 is about twice that of the deuteron. M047800100035 HISTORY (19910218C) Data were compiled at the Russia MSU SINP M047800100036 CDFE bt V.Varlamov. M047800100037 (20160220A) Corrected by V.Varlamov: dates, STATUS, M047800100038 ERR-ANALYS, COMMON. M047800100039 ENDBIB 37 0 M047800100040 COMMON 2 3 M047800100041 ANG ERR-SYS M047800100042 ADEG PER-CENT M047800100043 90. 5. M047800100044 ENDCOMMON 3 0 M047800100045 ENDSUBENT 44 0 M047800199999 SUBENT M0478002 20160220 M082M047800200001 BIB 3 3 M047800200002 REACTION (2-HE-3(G,P)1-H-2,,DA) M047800200003 STATUS (CURVE) Data from Fig. 3. M047800200004 HISTORY (20160220A) Corrected by V.Varlamov: STATUS, ERR-S. M047800200005 ENDBIB 3 0 M047800200006 NOCOMMON 0 0 M047800200007 DATA 3 13 M047800200008 EN DATA ERR-S M047800200009 MEV MB/SR MB/SR M047800200010 9. .078 .003 M047800200011 10. .086 .004 M047800200012 11. .095 .005 M047800200013 12. .089 .006 M047800200014 13. .09 .006 M047800200015 14. .082 .006 M047800200016 15. .079 .006 M047800200017 16. .066 .005 M047800200018 17. .062 .005 M047800200019 18. .062 .005 M047800200020 19. .059 .006 M047800200021 20. .059 .007 M047800200022 21. .043 .007 M047800200023 ENDDATA 15 0 M047800200024 ENDSUBENT 23 0 M047800299999 ENDENTRY 2 0 M047899999999