ENTRY M0488 20180301 M095M048800000001 SUBENT M0488001 20180301 M095M048800100001 BIB 14 49 M048800100002 TITLE Absolute cross section for the photodisintegration M048800100003 of deuterium. M048800100004 AUTHOR (Y.Birenbaum,S.Kahane,R.Moreh) M048800100005 REFERENCE (J,PR/C,32,1825,1985) M048800100006 INSTITUTE (3ISLNEG) M048800100007 FACILITY (REAC,3ISLNEG) IRR-2 reactor. M048800100008 INC-SOURCE (MPH=(26-FE-0(N,G))) M048800100009 (MPH=(28-NI-0(N,G))) M048800100010 METHOD (EXTB) An absorption method was used which is free of M048800100011 the errors involved in absolute photon beam M048800100012 intensity measurements. M048800100013 DETECTOR (NAICR) M048800100014 SAMPLE Two equivalent length absorbers consisting of light M048800100015 water ((H-2)O) and heavy water ((D-2)O). The M048800100016 absorbers consisted of stainless steel tubes of M048800100017 equal internal dimensions (4.2 cm) and different M048800100018 lengths: about 199.3 cm (filled with ((H-2)O) and M048800100019 about 200 cm (filled with ((D-2)O). The lengths of M048800100020 the absorbers were chosen to satisfy the relation: M048800100021 l-H/l-D = V-H/V-D, where l and V represent the M048800100022 lengths and molar volumes of the absorbers. With M048800100023 this choice the atomic attenuation of the photons in M048800100024 the two tubes becomes identical, and the difference M048800100025 in the transmitted intensities, which varies between M048800100026 1.5 and 2.7% over the range of photon energies used, M048800100027 is entirely due to the nuclear absorption via M048800100028 H-2(gamma,n) reaction. M048800100029 PART-DET (G) M048800100030 ANALYSIS The absolute photodisintegration cross section was M048800100031 measured by comparing the transmitted photon M048800100032 intensities after passing the photon beam through M048800100033 equivalent length of two absorbers consisting of M048800100034 light and heavy water. M048800100035 ERR-ANALYS (DATA-ERR) Standard deviation. M048800100036 COMMENT Accurate absolute cross sections for the deuterium M048800100037 photodisintegration were experimentally determined, M048800100038 using an absorption method, at the photon energies M048800100039 in the range from 6 to 11 MeV with uncertainties M048800100040 generally less than 3%. The photon beams were M048800100041 produced by thermal neutron capture, and the M048800100042 absorption through 2 m absorbers of H(2)O and D(2)O M048800100043 was measured. M048800100044 HISTORY (19910218C) M048800100045 (20030306A) Corrected by V.Varlamov: M048800100046 dates are corrected from two to four digits M048800100047 including that in reference and history, M048800100048 data-units are changed at m0488002. M048800100049 (20180315U) Corrected by SD and VV: Updated to lower M048800100050 case, STATUS. M048800100051 ENDBIB 49 0 M048800100052 NOCOMMON 0 0 M048800100053 ENDSUBENT 52 0 M048800199999 SUBENT M0488002 20180301 M095M048800200001 BIB 3 3 M048800200002 REACTION (1-H-2(G,N)1-H-1,,SIG) M048800200003 STATUS (TABLE) Table II of PR/C,32,1825,1985. M048800200004 HISTORY (20180315U) Corrected by SD and VV: STATUS. M048800200005 ENDBIB 3 0 M048800200006 NOCOMMON 0 0 M048800200007 DATA 4 7 M048800200008 EN EN-ERR DATA DATA-ERR M048800200009 MEV MEV MICRO-B MICRO-B M048800200010 5.97 2162. 99. M048800200011 7.25 .01 1882. 11. M048800200012 7.6 .01 1803. 16. M048800200013 7.64 1810. 28. M048800200014 8.8 .02 1586. 11. M048800200015 9. 1570. 36. M048800200016 11.39 1257. 36. M048800200017 ENDDATA 9 0 M048800200018 ENDSUBENT 17 0 M048800299999 ENDENTRY 2 0 M048899999999