ENTRY 30124 20080208 31263012400000001 SUBENT 30124001 20080208 31263012400100001 BIB 15 34 3012400100002 INSTITUTE (3SAFSUN) 3012400100003 REFERENCE (J,NP/A,125,312,196902) 3012400100004 AUTHOR (C.A.R.Bain,F.D.Brooks) 3012400100005 TITLE Inelastic scattering of neutrons to the 59 keV level 3012400100006 of I-127 3012400100007 FACILITY (VDG) 5.5 MV pulsed Van de Graaff 3012400100008 INC-SOURCE (P-LI7) Li-7(p,n)Be-7 reaction, neutron energy 3012400100009 calculated from proton energy assuming Q = -1.6433 MeV 3012400100010 SAMPLE Na-I crystal, 3.8 cm diam. and 0.16 cm thick 3012400100011 METHOD (TOF) Pulsed-beam time of flight technique was used 3012400100012 to discriminate against background, particularly gamma 3012400100013 rays originating in the Li target. 33 cm flight path 3012400100014 DETECTOR (NAICR) Na-I crystal 3012400100015 (LONGC) A long counter and a Li-6 loaded glass 3012400100016 scintillator used as neutron monitors 3012400100017 (SCIN) The two scintillators were placed symmetrically 3012400100018 at 10 deg about the proton beam direction (0 deg). 3012400100019 The long counter placed at 0 deg at 1 meter distance 3012400100020 a 2.2 Mm thick lead sheet was placed between the target3012400100021 and the scintillators. 3012400100022 MONITOR (3-LI-6(N,T)2-HE-4,,SIG) 3012400100023 Values from BNL-325 (1958) 3012400100024 PART-DET (G,N) gammas, neutrons, time resolution 10 ns (FWHM) 3012400100025 STATUS (TABLE) Data from priv com Brooks, same as fig 4. 3012400100026 NP a125 312 (1969) 3012400100027 HISTORY (19721204T) conversion of Dastar-1023 3012400100028 (20080208A) BIB section updated 3012400100029 CORRECTION For the contribution of neutron radiative capture 3012400100030 events to the neutron peak recorded by the Na-I 3012400100031 detector. Correction about 25% for 70 keV neutrons, 3012400100032 10% for 90 keV neutrons and less than 5% for 3012400100033 neutrons of energy exceeding 120 keV. 3012400100034 Correction for multiple scattering in Li-glass. 3012400100035 ERR-ANALYS No information given 3012400100036 ENDBIB 34 0 3012400100037 NOCOMMON 0 0 3012400100038 ENDSUBENT 37 0 3012400199999 SUBENT 30124002 20080208 31263012400200001 BIB 4 17 3012400200002 REACTION (53-I-127(N,INL)53-I-127,PAR,SIG) 3012400200003 COMMENT The cross section below 203 keV corresponds 3012400200004 unambiguously to the cross section for inelastic 3012400200005 neutron scattering to the 59 keV level. The cross 3012400200006 section above 203 keV may be partly due to inelastic 3012400200007 scattering to the 203 keV level with de-excitation 3012400200008 by cascade through the 59 keV level. However the 3012400200009 branching probability for transitions between the 3012400200010 203 keV and 59 keV levels is only 7.5% 3012400200011 the 375 keV level is believed to have spin 1/2 and is 3012400200012 unlikely to decay via the 59 keV level (j = 7/2). 3012400200013 The cross-section data obtained at neutron energies up 3012400200014 to at least 417 keV are therefore expected to be those 3012400200015 for inelastic scattering to the 59 keV level. 3012400200016 FLAG (1.) Li glass diam. 2.9 cm and thickness 0.25 cm used 3012400200017 (2.) Li glass diam. 3.8 cm and thickness 1.27 cm used 3012400200018 HISTORY (20080215S) Dataset was restored. 3012400200019 ENDBIB 17 0 3012400200020 COMMON 2 3 3012400200021 E-LVL-MIN E-LVL-MAX 3012400200022 KEV KEV 3012400200023 59. 417. 3012400200024 ENDCOMMON 3 0 3012400200025 DATA 4 53 3012400200026 EN DATA DATA-ERR FLAG 3012400200027 KEV MB MB NO-DIM 3012400200028 46. 0. 7. 1. 3012400200029 50. 0. 8. 2. 3012400200030 61. 10. 8. 1. 3012400200031 61. 25. 8. 1. 3012400200032 65. 37. 20. 2. 3012400200033 67. 60. 25. 2. 3012400200034 70. 60. 25. 2. 3012400200035 70. 89. 25. 1. 3012400200036 72. 64. 27. 2. 3012400200037 77. 155. 35. 1. 3012400200038 79. 80. 30. 2. 3012400200039 85. 282. 43. 1. 3012400200040 89. 178. 45. 2. 3012400200041 93. 208. 48. 2. 3012400200042 96. 341. 50. 1. 3012400200043 100. 351. 55. 2. 3012400200044 106. 379. 54. 1. 3012400200045 110. 428. 64. 2. 3012400200046 117. 406. 68. 2. 3012400200047 117. 403. 68. 2. 3012400200048 121. 545. 63. 1. 3012400200049 121. 546. 63. 1. 3012400200050 126. 559. 70. 2. 3012400200051 131. 548. 72. 2. 3012400200052 141. 660. 78. 2. 3012400200053 149. 609. 80. 2. 3012400200054 149. 712. 80. 2. 3012400200055 152. 696. 75. 1. 3012400200056 152. 655. 75. 1. 3012400200057 163. 717. 82. 2. 3012400200058 176. 803. 85. 2. 3012400200059 180. 725. 85. 1. 3012400200060 190. 823. 88. 2. 3012400200061 198. 738. 90. 2. 3012400200062 203. 790. 90. 2. 3012400200063 205. 733. 92. 1. 3012400200064 210. 887. 95. 2. 3012400200065 218. 767. 96. 1. 3012400200066 222. 773. 95. 2. 3012400200067 230. 773. 100. 1. 3012400200068 241. 752. 80. 2. 3012400200069 266. 700. 85. 2. 3012400200070 278. 677. 90. 2. 3012400200071 278. 709. 90. 2. 3012400200072 302. 608. 95. 2. 3012400200073 313. 756. 97. 2. 3012400200074 325. 844. 98. 2. 3012400200075 348. 863. 100. 2. 3012400200076 371. 853. 105. 2. 3012400200077 394. 983. 125. 2. 3012400200078 417. 909. 125. 2. 3012400200079 461. 866. 127. 2. 3012400200080 506. 798. 138. 2. 3012400200081 ENDDATA 55 0 3012400200082 ENDSUBENT 81 0 3012400299999 ENDENTRY 2 0 3012499999999