ENTRY O1608 20070517 O030O160800000001 SUBENT O1608001 20070517 O030O160800100001 BIB 12 52 O160800100002 TITLE Fusion of O-16+Sm-148,150,152,154 at sub-barrrier O160800100003 energies. O160800100004 AUTHOR (R.G.Stokstad, Y.Eisen, S.Kaplanis, D.Pelte, O160800100005 U.Smilansky, I.Tserruya) O160800100006 INSTITUTE (1USAORL) O160800100007 (3ISLWZI) O160800100008 REFERENCE (J,PR/C,21,2427,1980) O160800100009 HISTORY (20070516C) S B O160800100010 (20070517U) Last checking has been done. O160800100011 SAMPLE Targets were prepared by vacuum evaporation of O160800100012 samarium oxide enriched Sm-148(95%), Sm-150(95%), O160800100013 Sm-152(98%) and Sm-154(99%). The target material was O160800100014 backed by a carbon film having a thickness typically O160800100015 of 20-mug/cm**2. The Sm-oxide was first mixed with O160800100016 tantalum and thus was reduced to elemental form during O160800100017 the evaporation. The thickness of the targets varied O160800100018 between 100 and 200-mug/cm**2. O160800100019 FACILITY (VDGT,3ISLWZI) The 14-UD pelletron accelerator. O160800100020 DETECTOR (SIBAR) Two surface barrier silicon counters were O160800100021 used to monitor the elastic scattering from the target.O160800100022 They placed at +-40-degree to the beam and at a O160800100023 distance of 25-cm from the target. O160800100024 (GE) The X-ray detector consisted of 1.5-cm**3 of O160800100025 intrinsically pure Ge. A resolution of 350-eV(FWHM) wasO160800100026 obtained at 50-KeV. The catcher foil was positioned O160800100027 in front of the detector such that the photopeak O160800100028 efficiency in the range of 30-60-KeV was 5.5%. This O160800100029 efficiency was determined using a variety of O160800100030 calibrated point sources-Am-241, Cs-137, Co-57 and O160800100031 Eu-152. O160800100032 CORRECTION *By authors*.Corrections for the simultaneous detectionO160800100033 of more than one photon were applied. O160800100034 METHOD (SITA) O160800100035 ERR-ANALYS The sources of error has several categories- O160800100036 pure systematic errors consist only of the absolute O160800100037 Ge-detector efficiency(+-3%) and the solid angle of theO160800100038 monitor detectors(+-1%). O160800100039 Pure random errors include the number of counts in the O160800100040 monitor detector and the reproducibility of the monitorO160800100041 system in different runs and is +-2%. The main O160800100042 additional source of error was the absolute X-ray O160800100043 intensities and the corrections for summing of O160800100044 coincidental radiations is 3%. O160800100045 A summation in quadrature of random and partially O160800100046 random errors yields a standard deviation of 8.4%. O160800100047 The corresponding value for purely systematic errors isO160800100048 3.2%. O160800100049 (ERR-T).By summing in quadrature the different sources O160800100050 of error (see above) adopted an error of 10% for each O160800100051 cross section was reported. O160800100052 (EN-ERR).The uncerainty of the beam energy. O160800100053 STATUS (TABLE) In paper O160800100054 ENDBIB 52 0 O160800100055 COMMON 2 3 O160800100056 EN-ERR ERR-T O160800100057 PER-CENT PER-CENT O160800100058 0.15 10. O160800100059 ENDCOMMON 3 0 O160800100060 ENDSUBENT 59 0 O160800199999 SUBENT O1608002 20070517 O030O160800200001 BIB 2 16 O160800200002 REACTION (62-SM-148(8-O-16,FUS),,SIG) O160800200003 COMMENT *By authors* the different isotopic contributions, O160800200004 expressed as a percentage of the fusion cross sections,O160800200005 see below- O160800200006 xn- distribution(%) O160800200007 en(MeV) 1N 2N 3N 4N O160800200008 Sm-148 75.0 5.(7) 84.(4) 11.(8) O160800200009 70.0 14.(1) 81.(2) 5.(3) O160800200010 67.5 21.(1) 78.(1) 1.(1) O160800200011 65.0 39.(1) 59.(1) 2.(2) O160800200012 63.75 2.(2) 49.(2) 49.(2) O160800200013 62.5 3.(1) 62.(2) 35.(2) O160800200014 61.25 12.(6) 73.(4) 15.(4) O160800200015 60.0 9.(5) 91.(7) O160800200016 the number in parentheses is the uncertainty onO160800200017 the last digit. O160800200018 ENDBIB 16 0 O160800200019 NOCOMMON 0 0 O160800200020 DATA 2 8 O160800200021 EN DATA O160800200022 MEV MB O160800200023 75.02 404. O160800200024 70.01 183. O160800200025 67.51 89.4 O160800200026 65. 27. O160800200027 63.75 10.7 O160800200028 62.49 3.13 O160800200029 61.24 0.721 O160800200030 59.98 0.115 O160800200031 ENDDATA 10 0 O160800200032 ENDSUBENT 31 0 O160800299999 SUBENT O1608003 20070517 O030O160800300001 BIB 2 16 O160800300002 REACTION (62-SM-150(8-O-16,FUS),,SIG) O160800300003 COMMENT *By authors* the different isotopic contributions, O160800300004 expressed as a percentage of the fusion cross sections,O160800300005 see below- O160800300006 xn- distribution(%) O160800300007 en(MeV) 2N 3N 4N O160800300008 Sm-150 75.0 2.(1) 43.(2) 55.(2) O160800300009 70.0 2.(1) 72.(2) 26.(1) O160800300010 67.5 5.(1) 81.(1) 14.(3) O160800300011 65.0 8.(2) 86.(2) 6.(2) O160800300012 63.75 10.(1) 81.(2) 9.(2) O160800300013 62.5 13.(2) 80.(2) 7.(2) O160800300014 61.25 16.(4) 71.(3) 13.(1) O160800300015 60.0 24.(3) 67.(4) 9.(4) O160800300016 the number in parentheses is the uncertainty onO160800300017 the last digit. O160800300018 ENDBIB 16 0 O160800300019 NOCOMMON 0 0 O160800300020 DATA 2 8 O160800300021 EN DATA O160800300022 MEV MB O160800300023 75.02 440. O160800300024 70.01 243. O160800300025 67.51 117. O160800300026 65. 38.4 O160800300027 63.75 20.2 O160800300028 62.49 7.75 O160800300029 61.24 2.22 O160800300030 59.98 0.472 O160800300031 ENDDATA 10 0 O160800300032 ENDSUBENT 31 0 O160800399999 SUBENT O1608004 20070517 O030O160800400001 BIB 2 15 O160800400002 REACTION (62-SM-152(8-O-16,FUS),,SIG) O160800400003 COMMENT *By authors* the different isotopic contributions, O160800400004 expressed as a percentage of the fusion cross sections,O160800400005 see below- O160800400006 xn- distribution(%) O160800400007 en(MeV) 2N 3N 4N 5N O160800400008 Sm-152 75.0 15.(2) 81.(2) 4.(1) O160800400009 70.0 37.(1) 62.(1) 1.(1) O160800400010 65.0 2.(1) 73.(2) 25.(1) O160800400011 63.75 1.(5) 83.(2) 16.(1) O160800400012 62.5 2.(1) 90.(3) 8.(2) O160800400013 61.25 5.(2) 92.(3) 3.(1) O160800400014 60.0 7.(3) 93.(3) O160800400015 the number in parentheses is the uncertainty onO160800400016 the last digit. O160800400017 ENDBIB 15 0 O160800400018 NOCOMMON 0 0 O160800400019 DATA 2 7 O160800400020 EN DATA O160800400021 MEV MB O160800400022 74.95 462. O160800400023 69.94 213. O160800400024 64.93 43.9 O160800400025 63.68 24.4 O160800400026 62.42 11.7 O160800400027 61.17 4.4 O160800400028 59.92 1.06 O160800400029 ENDDATA 9 0 O160800400030 ENDSUBENT 29 0 O160800499999 SUBENT O1608005 20070517 O030O160800500001 BIB 2 16 O160800500002 REACTION (62-SM-154(8-O-16,FUS),,SIG) O160800500003 COMMENT *By authors* the different isotopic contributions, O160800500004 expressed as a percentage of the fusion cross sections,O160800500005 see below- O160800500006 xn- distribution(%) O160800500007 en(MeV) 3N 4N 5N O160800500008 Sm-154 75.0 66.(2) 34.(2) O160800500009 70.0 8.(1) 82.(2) 9.(1) O160800500010 67.5 18.(2) 82.(4) O160800500011 65.0 32.(1) 68.(2) O160800500012 63.75 45.(2) 55.(2) O160800500013 62.5 51.(2) 49.(2) O160800500014 61.25 68.(2) 32.(5) O160800500015 60.0 80.(2) 20.(5) O160800500016 the number in parentheses is the uncertainty onO160800500017 the last digit. O160800500018 ENDBIB 16 0 O160800500019 NOCOMMON 0 0 O160800500020 DATA 2 8 O160800500021 EN DATA O160800500022 MEV MB O160800500023 75.06 430. O160800500024 70.05 235. O160800500025 67.54 134. O160800500026 65.04 55.8 O160800500027 63.78 29.4 O160800500028 62.53 15.3 O160800500029 61.28 6.24 O160800500030 60.03 2.21 O160800500031 ENDDATA 10 0 O160800500032 ENDSUBENT 31 0 O160800599999 ENDENTRY 5 0 O160899999999