ENTRY D0021 20160518 D104D002100000001 SUBENT D0021001 20160518 D104D002100100001 BIB 14 38 D002100100002 TITLE Measurement of the absolute total cross section for theD002100100003 Reaction Li-7(d,p)Li-8 at low energies. D002100100004 AUTHOR (D.W.Mingay) D002100100005 INSTITUTE (3SAFPEL) D002100100006 REFERENCE (J,SAP,2,(3),107,1979) D002100100007 SAMPLE Natural lithium targets, with thicknesses ranging from D002100100008 20 to 230 micro-g/cm2, prepared by vacuum evaporation D002100100009 onto tantalum cups. these targets were 8 to 95 keV D002100100010 thick to 800 keV deuterons. D002100100011 MONITOR (3-LI-7(D,P)3-LI-8,PAR,SIG) Li-7(d,po)Li-8(g.s.). D002100100012 the energy of the beam was calibrated in terms of the D002100100013 Li-7(p,n)Be-7 reaction threshold energy(1880.60 keV), D002100100014 the F-19(p,ag)O-16 resonance at 872.11 keV and the D002100100015 Al-27(p,g)Si-28 resonance at 991.88 keV. D002100100016 MONIT-REF (,,T,MINGAY,1964) p.164. D002100100017 (A1429001,J.L.C.FORD,J,PR,136,B953,1964) D002100100018 FACILITY (VDG,3SAFPEL) 3.75 MeV van de graaff accelerator. D002100100019 deuteron beam energies ranging from 0.7 MeV to 3.4 MeV D002100100020 with energy resolution of 1 to 2keV. D002100100021 INC-SPECT energy of beam was calibrated in terms of Li-7(p,n)Be-7D002100100022 reaction threshold (1880.60 keV), F-19(p,ag)O-16m D002100100023 resonance at 872.11 keV and Al-27(p,g)Si-28m resonance D002100100024 at 991.88 keV. D002100100025 METHOD (ACTIV) D002100100026 delayed counting of the 13 MeV energy beta decay of 8LiD002100100027 .pulses representative of beta energies less than 3 MeVD002100100028 were rejected to reduce the background due to competingD002100100029 reactions, such as F-19(d,p)F-20 to Ne-20 (t(1/2)=11.56D002100100030 sec) and at higher energies, Li-7(d,n)Be-8, Li-6(d,n) D002100100031 Be-7 and D(d,n)He3. D002100100032 DETECTOR (SCIN) plastic scintillation detector, NE102A, 50 mm D002100100033 in diameter and 10 mm thick. D002100100034 PART-DET (B-) D002100100035 ERR-ANALYS (DATA-ERR) estimated total error is to be less than 9% D002100100036 over the full energy range. D002100100037 HISTORY (19801203C) KO. D002100100038 (20060725A) BIB section upgrated D002100100039 (20160518U) Codded information added in METHOD. D002100100040 ENDBIB 38 0 D002100100041 NOCOMMON 0 0 D002100100042 ENDSUBENT 41 0 D002100199999 SUBENT D0021002 20060725 D048D002100200001 BIB 4 12 D002100200002 REACTION (3-LI-7(D,P)3-LI-8,,SIG) D002100200003 COMMENT the result showed no evidence of a resonance at 1.4 MeVD002100200004 previously reported. Broad structure is, however, seeD002100200005 at 1.7, 2.35 and 3.30 MeV in addition to the two well- D002100200006 known strong resonances at 780+-10 keV and 1030+-10 keVD002100200007 (The peak X-section is 174+-16mb and 166+-15mb, D002100200008 respectively.) D002100200009 HALF-LIFE (HL,3-LI-8) D002100200010 new half-life of li-8 of 837+-3 milli-sec is proposed. D002100200011 STATUS data from D.W.Mingay as priv.comm.,80/11/19. these D002100200012 correspond to the curve in fig.5 and .6 of S.Afr.J. D002100200013 Phys.,2,(3),(1979)107. D002100200014 ENDBIB 12 0 D002100200015 COMMON 2 3 D002100200016 HL HL-ERR D002100200017 MSEC MSEC D002100200018 837. 3. D002100200019 ENDCOMMON 3 0 D002100200020 DATA 3 91 D002100200021 EN DATA DATA-ERR D002100200022 MEV MB MB D002100200023 0.70 110. 10. D002100200024 0.72 135. 12. D002100200025 0.74 153. 14. D002100200026 0.76 167. 15. D002100200027 0.78 171. 16. D002100200028 0.80 173. 16. D002100200029 0.82 169. 16. D002100200030 0.84 161. 15. D002100200031 0.86 157. 14. D002100200032 0.88 146. 13. D002100200033 0.90 142. 13. D002100200034 0.92 138. 13. D002100200035 0.94 135. 12. D002100200036 0.96 136. 12. D002100200037 0.98 139. 13. D002100200038 1.00 148. 14. D002100200039 1.02 160. 15. D002100200040 1.04 166. 15. D002100200041 1.06 159. 15. D002100200042 1.08 148. 14. D002100200043 1.10 139. 13. D002100200044 1.12 136. 12. D002100200045 1.14 137. 12. D002100200046 1.16 138. 13. D002100200047 1.18 141. 13. D002100200048 1.20 143. 13. D002100200049 1.22 147. 13. D002100200050 1.24 151. 13. D002100200051 1.26 153. 14. D002100200052 1.28 158. 14. D002100200053 1.30 156. 14. D002100200054 1.32 161. 14. D002100200055 1.34 163. 15. D002100200056 1.36 170. 16. D002100200057 1.38 170. 16. D002100200058 1.40 174. 16. D002100200059 1.42 177. 16. D002100200060 1.44 181. 17. D002100200061 1.46 184. 16. D002100200062 1.48 186. 16. D002100200063 1.50 188. 16. D002100200064 1.52 191. 17. D002100200065 1.54 193. 17. D002100200066 1.56 196. 17. D002100200067 1.58 196. 17. D002100200068 1.60 197. 17. D002100200069 1.62 200. 18. D002100200070 1.64 203. 18. D002100200071 1.66 203. 18. D002100200072 1.68 204. 18. D002100200073 1.70 206. 18. D002100200074 1.72 204. 18. D002100200075 1.74 206. 18. D002100200076 1.76 207. 18. D002100200077 1.78 208. 18. D002100200078 1.80 209. 18. D002100200079 1.82 209. 18. D002100200080 1.84 208. 18. D002100200081 1.86 208. 18. D002100200082 1.88 207. 18. D002100200083 1.90 207. 18. D002100200084 1.95 208. 18. D002100200085 2.00 210. 18. D002100200086 2.05 210. 18. D002100200087 2.10 213. 19. D002100200088 2.15 216. 19. D002100200089 2.20 221. 20. D002100200090 2.25 224. 20. D002100200091 2.30 228. 20. D002100200092 2.35 230. 20. D002100200093 2.40 232. 21. D002100200094 2.45 230. 20. D002100200095 2.50 231. 21. D002100200096 2.55 231. 21. D002100200097 2.60 235. 21. D002100200098 2.65 235. 21. D002100200099 2.70 237. 21. D002100200100 2.75 238. 21. D002100200101 2.80 243. 22. D002100200102 2.85 243. 22. D002100200103 2.90 248. 22. D002100200104 2.95 249. 22. D002100200105 3.00 255. 23. D002100200106 3.05 256. 23. D002100200107 3.10 262. 23. D002100200108 3.15 270. 24. D002100200109 3.20 273. 24. D002100200110 3.25 277. 24. D002100200111 3.30 278. 24. D002100200112 3.35 278. 24. D002100200113 3.40 274. 24. D002100200114 ENDDATA 93 0 D002100200115 ENDSUBENT 114 0 D002100299999 ENDENTRY 2 0 D002199999999