ENTRY 20056 20190203 22742005600000001 SUBENT 20056001 20190203 22742005600100001 BIB 12 44 2005600100002 TITLE Cross section measurements of the Ni-58(n,p)Co-58 and 2005600100003 Si-29(n,alpha)Mg-26 reactions in the energy 2005600100004 range 2.2 to 3.8 MeV 2005600100005 AUTHOR (J.Konijn,A.Lauber) 2005600100006 REFERENCE (J,NP,48,191,1963) 2005600100007 INSTITUTE (2SWDAE ) 2005600100008 FACILITY (VDG,2SWDAE ) 5.5 MeV van de Graaff. 2005600100009 INC-SOURCE (P-LI7) Li-7(p,n) reaction. 2005600100010 .Above 2.37 MeV a second neutron group about 0.45 MeV 2005600100011 below the main group and with about 10% of its 2005600100012 intensity is present. 2005600100013 METHOD Direct charged particle detection. 2005600100014 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2005600100015 Polyethylene film 19 microm. thick. 2005600100016 There are 3 runs made, two relative measurements and 2005600100017 one measurement with the n,p cross-section as a 2005600100018 standard, each run at a different series of energies. 2005600100019 The relative measurements were normalized at 3.33 MeV 2005600100020 to the third measurement. 2005600100021 The result is all points of the different measurements2005600100022 eventually averaged where the energy is the same. 2005600100023 DETECTOR (SIBAR) Solid state of surface-barrier type, n-type 2005600100024 silicon for charged particle detection. The detectors 2005600100025 had a sensitive area of 12 mm in diam., lined with 2005600100026 approximately 50. mu-g/cm2 gold. 2005600100027 (LONGC) Long counter for neutron detection. 2005600100028 Proton-recoil counter viewing the 2005600100029 polyethylene sample used as standard. 2005600100030 ERR-ANALYS (ERR-SYS) Systematic error mainly includes: 2005600100031 * the error in the neutron-proton 2005600100032 scattering cross section < 1% 2005600100033 * uncertainty in the neutron monitoring with 2005600100034 the proton recoil 2% 2005600100035 * uncertainty in the solid angle estimation < 3% 2005600100036 (DATA-ERR) uncertainty in possible shift in 2005600100037 pulse-height spectra when subtracting the background 2005600100038 in the measurements 2005600100039 COMMENT Estimations of the level densities of the intermediate2005600100040 nuclei from the relative fluctuations of the cross 2005600100041 section curves are in good agreement with those 2005600100042 expected on theoretical grounds. 2005600100043 HISTORY (19701029T) NEUDADA file. 2005600100044 (20190203U) SD:Updated to new date formats,lower case. 2005600100045 Small corrections in all Subents. 2005600100046 ENDBIB 44 0 2005600100047 COMMON 1 3 2005600100048 ERR-SYS 2005600100049 PER-CENT 2005600100050 7. 2005600100051 ENDCOMMON 3 0 2005600100052 ENDSUBENT 51 0 2005600199999 SUBENT 20056002 20190203 22742005600200001 BIB 4 6 2005600200002 REACTION (14-SI-29(N,A)12-MG-26,,SIG) 2005600200003 SAMPLE n-type silicon as sample and detector. 2005600200004 STATUS (TABLE) Tbl.5 from Nucl.Phys.,48(1963)191 2005600200005 HISTORY (20190203A) SD: MONITOR moved to Subent 001. Data 2005600200006 were updated according to presentation in the table. 2005600200007 ERR-ANALYS moved to Subent 001. EN-RSL->EN-RSL-HW. 2005600200008 ENDBIB 6 0 2005600200009 NOCOMMON 0 0 2005600200010 DATA 4 46 2005600200011 EN EN-RSL-HW DATA DATA-ERR 2005600200012 MEV MEV MB MB 2005600200013 2.44 0.03 0.19 0.38 2005600200014 2.52 0.03 0.69 0.31 2005600200015 2.59 0.03 0.51 0.30 2005600200016 2.62 0.03 0.75 0.36 2005600200017 2.66 0.03 0.88 0.33 2005600200018 2.70 0.03 2.22 0.51 2005600200019 2.73 0.03 2.51 0.75 2005600200020 2.77 0.03 2.05 0.47 2005600200021 2.79 0.03 1.15 0.14 2005600200022 2.81 0.03 1.67 0.44 2005600200023 2.84 0.03 1.10 0.22 2005600200024 2.86 0.03 0.54 0.14 2005600200025 2.88 0.03 1.15 0.41 2005600200026 2.90 0.03 0.82 0.14 2005600200027 2.92 0.03 1.00 0.42 2005600200028 2.95 0.03 1.79 0.45 2005600200029 2.99 0.03 1.16 0.36 2005600200030 3.01 0.03 0.73 0.15 2005600200031 3.03 0.03 0.70 0.34 2005600200032 3.05 0.03 0.54 0.14 2005600200033 3.07 0.03 0.74 0.34 2005600200034 3.10 0.04 0.62 0.12 2005600200035 3.12 0.04 0.96 0.12 2005600200036 3.14 0.04 1.43 0.48 2005600200037 3.16 0.04 2.00 0.20 2005600200038 3.18 0.04 3.31 0.36 2005600200039 3.20 0.04 6.14 0.38 2005600200040 3.22 0.04 4.36 0.22 2005600200041 3.24 0.04 4.60 0.24 2005600200042 3.26 0.04 5.86 0.23 2005600200043 3.28 0.04 8.03 0.43 2005600200044 3.31 0.04 7.84 0.27 2005600200045 3.33 0.04 6.75 0.50 2005600200046 3.37 0.04 6.13 0.22 2005600200047 3.39 0.04 2.62 0.24 2005600200048 3.41 0.04 4.94 0.36 2005600200049 3.43 0.04 4.02 0.29 2005600200050 3.45 0.04 3.51 0.42 2005600200051 3.49 0.04 2.70 0.17 2005600200052 3.53 0.04 2.46 0.24 2005600200053 3.57 0.04 1.42 0.23 2005600200054 3.61 0.04 1.89 0.19 2005600200055 3.65 0.04 2.58 0.26 2005600200056 3.69 0.04 6.27 0.69 2005600200057 3.73 0.04 5.55 0.56 2005600200058 3.77 0.04 4.38 0.57 2005600200059 ENDDATA 48 0 2005600200060 ENDSUBENT 59 0 2005600299999 SUBENT 20056003 20190203 22742005600300001 BIB 5 16 2005600300002 REACTION (28-NI-58(N,P)27-CO-58,,SIG) 2005600300003 SAMPLE Natural nickel-foil, 7.1 mu-m thick foil 2005600300004 spectroscopically analysed, 99.5% 28-Ni, about 2005600300005 0.25% 12-Mg, about 0.2% 26-Fe, about 0.05% 27-Co. 2005600300006 For some of the measurements a third target was used 2005600300007 of about 1 mu-m thickness. This consisted of an 2005600300008 electromagnetically separated nickel target evaporated 2005600300009 on a Pt-backing and enriched in 58Ni to 99.5% with 2005600300010 850.+-5. mu-g 58Ni over a circular area of about 1 cm2 2005600300011 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2005600300012 Polyethylene film 19 microm. Thick 2005600300013 .only measured in the third run. (See subwork 2). 2005600300014 STATUS (TABLE) Tbl.7 from Nucl.Phys.,48(1963)191 2005600300015 HISTORY (20190203A) SD: MONITOR moved to Subent 001. Data were2005600300016 updated according to presentation in the table. 2005600300017 ERR-ANALYS moved to Subent 001. EN-RSL->EN-RSL-HW. 2005600300018 ENDBIB 16 0 2005600300019 NOCOMMON 0 0 2005600300020 DATA 4 36 2005600300021 EN EN-RSL-HW DATA DATA-ERR 2005600300022 MEV MEV MB MB 2005600300023 2.24 0.03 76. 3. 2005600300024 2.30 0.03 107. 4. 2005600300025 2.37 0.03 89. 3. 2005600300026 2.44 0.03 99. 4. 2005600300027 2.52 0.03 104. 4. 2005600300028 2.59 0.03 158. 6. 2005600300029 2.62 0.03 124. 9. 2005600300030 2.66 0.03 133. 8. 2005600300031 2.73 0.03 184. 21. 2005600300032 2.77 0.03 174. 17. 2005600300033 2.81 0.03 186. 17. 2005600300034 2.84 0.03 171. 20. 2005600300035 2.88 0.03 212. 19. 2005600300036 2.92 0.03 256. 18. 2005600300037 2.95 0.03 242. 17. 2005600300038 2.99 0.03 237. 15. 2005600300039 3.03 0.03 211. 16. 2005600300040 3.07 0.03 202. 16. 2005600300041 3.10 0.04 227. 22. 2005600300042 3.14 0.04 456. 22. 2005600300043 3.18 0.04 355. 44. 2005600300044 3.22 0.04 188. 29. 2005600300045 3.26 0.04 198. 15. 2005600300046 3.31 0.04 189. 15. 2005600300047 3.33 0.04 298. 31. 2005600300048 3.37 0.04 320. 25. 2005600300049 3.41 0.04 281. 20. 2005600300050 3.45 0.04 264. 17. 2005600300051 3.49 0.04 237. 20. 2005600300052 3.53 0.04 179. 22. 2005600300053 3.57 0.04 321. 47. 2005600300054 3.61 0.04 106. 41. 2005600300055 3.65 0.04 183. 37. 2005600300056 3.69 0.04 311. 44. 2005600300057 3.73 0.04 321. 30. 2005600300058 3.77 0.04 389. 32. 2005600300059 ENDDATA 38 0 2005600300060 ENDSUBENT 59 0 2005600399999 ENDENTRY 3 0 2005699999999