ENTRY O1838 20100209 O041O183800000001 SUBENT O1838001 20100209 O041O183800100001 BIB 13 39 O183800100002 TITLE Angular distributions from the reaction C-12(a,g)O-16 O183800100003 in the 13 MeV excitation region of O-16. O183800100004 AUTHOR (G.Kernel, W.M.Mason, U.von Wimmersperg) O183800100005 INSTITUTE (2UK OXF) O183800100006 REFERENCE (J,NP/A,167,352,1971) O183800100007 SAMPLE The self-supporting C-12 targets were produced from O183800100008 isotopically pure powdered carbon enriched to 99.98% O183800100009 in C-12, the thickness was determined using two O183800100010 independent method-the measurement of the contraction O183800100011 of the range in air of alpha particles from an O183800100012 americium source when the target was placed in the O183800100013 alpha-particle beam.The value obtained for the target O183800100014 to which about 90% of data are due is O183800100015 13.4+-1.3 mug/cm**2 and approx. 20 mug/cm**2 for the O183800100016 other target. The second method used was the O183800100017 measurement of the excitation function over the narrow O183800100018 E(a)=3.6 MeV resonance-a value is 14+3 mug/cm**2 for O183800100019 the first target. O183800100020 FACILITY (VDGT) O183800100021 DETECTOR (NAICR) 24cmx30cm , 12.5cmx15cm NaI(Tl) crystals O183800100022 and 12.5cmx15cm NaI(Tl) crystal at 61 degr. as monitorO183800100023 (SCIN) O183800100024 METHOD (GSPEC) O183800100025 CORRECTION Absorption corrections was applied O183800100026 ERR-ANALYS Error from counting statistics is O183800100027 E(a) ANG(degree) Error(%) O183800100028 7.70 45. 1.7 O183800100029 7.70 90. 3.5 O183800100030 7.70 135. 3.0 O183800100031 7.88 45. 1.1 O183800100032 7.88 90. 1.4 O183800100033 7.88 135. 1.6 O183800100034 8.10 45. 2.8 O183800100035 8.10 90. 3.8 O183800100036 8.10 135. 3.9 O183800100037 COMMENT *By authors*.The yields at different angles were O183800100038 normalized to the monitor yield. O183800100039 EN-SEC (E-LVL,8-O-16) O183800100040 HISTORY (20100209C)SB O183800100041 ENDBIB 39 0 O183800100042 COMMON 1 3 O183800100043 E-LVL O183800100044 MEV O183800100045 0. O183800100046 ENDCOMMON 3 0 O183800100047 ENDSUBENT 46 0 O183800199999 SUBENT O1838002 20100210 O041O183800200001 BIB 3 3 O183800200002 REACTION (6-C-12(A,G)8-O-16,PAR,DA,,REL) O183800200003 ERR-ANALYS (ERR-S).Statistical error. O183800200004 STATUS (TABLE).Table 2. O183800200005 ENDBIB 3 0 O183800200006 NOCOMMON 0 0 O183800200007 DATA 4 18 O183800200008 EN ANG DATA ERR-S O183800200009 MEV ADEG ARB-UNITS ARB-UNITS O183800200010 7.60 45. 265. 15. O183800200011 7.60 90. 341. 21. O183800200012 7.60 135. 122. 11. O183800200013 7.70 45. 468. 8. O183800200014 7.70 90. 528. 16. O183800200015 7.70 135. 165. 5. O183800200016 7.80 45. 1096. 30. O183800200017 7.80 90. 1144. 43. O183800200018 7.80 135. 317. 14. O183800200019 7.88 45. 1350. 17. O183800200020 7.88 90. 1637. 24. O183800200021 7.88 135. 529. 9. O183800200022 8.00 45. 460. 23. O183800200023 8.00 90. 604. 31. O183800200024 8.00 135. 261. 12. O183800200025 8.10 45. 180. 6. O183800200026 8.10 90. 201. 7. O183800200027 8.10 135. 120. 6. O183800200028 ENDDATA 20 0 O183800200029 ENDSUBENT 28 0 O183800299999 SUBENT O1838003 20100217 O041O183800300001 BIB 3 4 O183800300002 REACTION (6-C-12(A,G)8-O-16,PAR,DA,,LEG/REL) O183800300003 STATUS (TABLE) Table 2 O183800300004 (DEP,O1838002) Yields at 45, 90 and 130 deg O183800300005 ERR-ANALYS (ERR-S).Statistical error. O183800300006 ENDBIB 4 0 O183800300007 COMMON 1 3 O183800300008 NUMBER O183800300009 NO-DIM O183800300010 0. O183800300011 ENDCOMMON 3 0 O183800300012 DATA 3 6 O183800300013 EN DATA ERR-S O183800300014 MEV ARB-UNITS ARB-UNITS O183800300015 7.60 240. 10. O183800300016 7.70 382. 7. O183800300017 7.80 836. 19. O183800300018 7.88 1158. 11. O183800300019 8.00 443. 14. O183800300020 8.10 161. 10. O183800300021 ENDDATA 8 0 O183800300022 ENDSUBENT 21 0 O183800399999 SUBENT O1838004 20100210 O041O183800400001 BIB 3 4 O183800400002 REACTION (6-C-12(A,G)8-O-16,PAR,DA,,LEG/RS) O183800400003 STATUS (TABLE) Table 2 O183800400004 (DEP,O1838002) Yields at 45, 90 and 130 deg O183800400005 ERR-ANALYS (ERR-S).Statistical error. O183800400006 ENDBIB 4 0 O183800400007 NOCOMMON 0 0 O183800400008 DATA 4 12 O183800400009 EN NUMBER DATA ERR-S O183800400010 MEV NO-DIM NO-DIM NO-DIM O183800400011 7.60 1. 0.303 0.045 O183800400012 7.60 2. -0.93 0.09 O183800400013 7.70 1. 0.411 0.016 O183800400014 7.70 2. -0.89 0.04 O183800400015 7.80 1. 0.495 0.025 O183800400016 7.80 2. -0.88 0.05 O183800400017 7.88 1. 0.366 0.010 O183800400018 7.88 2. -0.93 0.02 O183800400019 8.00 1. 0.174 0.036 O183800400020 8.00 2. -0.86 0.07 O183800400021 8.10 1. 0.172 0.045 O183800400022 8.10 2. -0.72 0.09 O183800400023 ENDDATA 14 0 O183800400024 ENDSUBENT 23 0 O183800499999 SUBENT O1838005 20100210 O041O183800500001 BIB 5 17 O183800500002 REACTION (6-C-12(A,G)8-O-16,PAR,SIG) fig.8 O183800500003 MONITOR (6-C-12(A,G)8-O-16,PAR,SIG) at 61 deg O183800500004 METHOD (BCINT) Cross sections calculated from number O183800500005 of incident alpha-particles, the number of 12C O183800500006 nuclei per cm2, total number of 13 MeV gamma- O183800500007 rays incident in the detector solid angle at O183800500008 61 deg O183800500009 ERR-ANALYS (ERR-SYS).The uncertainty of the absolute value of the O183800500010 cross section of 11% is mainly due to the error in the O183800500011 target thickness determination. O183800500012 (ERR-1).Accuracy in number of gamma-rays. O183800500013 (ERR-2).The error of the beam-charge measurement. O183800500014 (ERR-DIG).Digitizing error of data. O183800500015 (MONIT-ERR).Normalization error O183800500016 (DATA-ERR). Excluding normalization uncertainty O183800500017 STATUS (CURVE).By Cajad. O183800500018 (DEP,O1838003) A0 in arbitrary unit O183800500019 ENDBIB 17 0 O183800500020 COMMON 6 3 O183800500021 ANG-NRM MONIT-ERR ERR-SYS ERR-1 ERR-2 ERR-DIG O183800500022 ADEG PER-CENT PER-CENT PER-CENT PER-CENT MICRO-B O183800500023 61. 4. 11. 2. 5. 0.4 O183800500024 ENDCOMMON 3 0 O183800500025 DATA 3 9 O183800500026 EN DATA DATA-ERR O183800500027 MEV MICRO-B MICRO-B O183800500028 7.6 13.1 O183800500029 7.7 21.1 O183800500030 7.8 45.5 1.2 O183800500031 7.9 63. O183800500032 8.0 23.9 0.8 O183800500033 8.1 8.3 O183800500034 8.2 3.7 O183800500035 8.3 2.8 O183800500036 8.4 1.9 O183800500037 ENDDATA 11 0 O183800500038 ENDSUBENT 37 0 O183800599999 ENDENTRY 5 0 O183899999999