ENTRY O1720 20090107 O038O172000000001 SUBENT O1720001 20090107 O038O172000100001 BIB 13 55 O172000100002 TITLE Fusion of O-16+Sm-144 at sub-barrrier energies. O172000100003 AUTHOR (D.E.Di Gregorio, J.O.Fernandez Niello,A.J.Pacheco, O172000100004 D.Abriola, S.Gil, A.O.Macchiavelli, J.E.Testoni, O172000100005 P.R.Pascholati, V.R.Vanin, R.Liguori Neto, O172000100006 N.Carlin Filho, M.M.Coimbra, P.R.Silveira Gomes, O172000100007 R.G.Stokstad) O172000100008 INSTITUTE (3ARGCNE) O172000100009 (3BZLUSP) O172000100010 (3BZLUFF) O172000100011 (1USABRK) O172000100012 REFERENCE (J,PL/B,176,322,1986) O172000100013 (J,PR/C,21,2427,1980) It is O1608 and fusion of O172000100014 O-16+Sm-148-154. O172000100015 SAMPLE A 94 mug/cm**2 Sm-144 target isotopically enriched O172000100016 to 88.6% was used. O172000100017 Evaporation residues were trapped in a stack of three O172000100018 aluminized mylar foils, glued together to form a singleO172000100019 catcher foil, which was placed about 3 mm behind the O172000100020 target. O172000100021 FACILITY (VDGT,3BZLUSP) The 8-UD Pelletron accelerator. O172000100022 DETECTOR (SIBAR) Silicon surface-barrier detectors were placed O172000100023 at 45 degree to the beam for monitoring the Rutherford O172000100024 scattering. O172000100025 (GE) The a 5 cm**3 Ge planar X-ray detector with O172000100026 energy resolution of 480-eV(FWHM). O172000100027 COMMENT *By authors*.Effects explicitly taken into accoount in O172000100028 the deduction of the cross sections are- O172000100029 -the time dependence of the beam intensity O172000100030 -the presence of isomeric states with half-lives of O172000100031 several minutes in the decay chains of some of the O172000100032 evaporation residues, O172000100033 -summing effects due to the simultaneous detection O172000100034 of more than one photon. O172000100035 CORRECTION Corrections to the Ho and Dy K(alpha) X-ray yields fromO172000100036 the fusion of O-16 with the 11.4% of other Sm isotopes O172000100037 present in the target were based on the measured(see O172000100038 O1608) or interpolated cross sections for these O172000100039 isotopes. These corrections were relatively small O172000100040 because the X-ray energy and decay half-life enable oneO172000100041 to discriminate experimentally against the products of O172000100042 fusion with the heavier isotopes. No corrections need O172000100043 be made for fusion of the projectile with the light O172000100044 contaminants in the target because these residues pass O172000100045 through the catcher fooil. Fission of the compound O172000100046 nucleus and alpha-particle emission were estimated to O172000100047 be negligible effects. O172000100048 METHOD (SITA) O172000100049 ERR-ANALYS Taking into account the sources of random and O172000100050 systematic uncertainties(excludin beam energy), an O172000100051 overall error of around 9% in the fusion cross sectionsO172000100052 was calculated. The systematic error on the beam energyO172000100053 is equivalent to a 20% systematic error on the cross O172000100054 sections for the three lowest bombarding energies. O172000100055 STATUS (CURVE) By CAJAD. O172000100056 HISTORY (20090107C) S B O172000100057 ENDBIB 55 0 O172000100058 NOCOMMON 0 0 O172000100059 ENDSUBENT 58 0 O172000199999 SUBENT O1720002 20090107 O038O172000200001 BIB 2 3 O172000200002 REACTION (62-SM-144(8-O-16,FUS),,SIG) O172000200003 ERR-ANALYS (ERR-DIG).Digitizing error of data. O172000200004 (EN-ERR-DIG).Digitizing error of incident energy. O172000200005 ENDBIB 3 0 O172000200006 COMMON 2 3 O172000200007 EN-ERR-DIG ERR-DIG O172000200008 MEV PER-CENT O172000200009 0.07 3. O172000200010 ENDCOMMON 3 0 O172000200011 DATA 2 8 O172000200012 EN DATA O172000200013 MEV MB O172000200014 62.94 0.267 O172000200015 63.97 0.96 O172000200016 64.84 4.18 O172000200017 65.82 13.7 O172000200018 66.91 41.8 O172000200019 67.9 76.5 O172000200020 69.89 182. O172000200021 71.89 333. O172000200022 ENDDATA 10 0 O172000200023 ENDSUBENT 22 0 O172000299999 ENDENTRY 2 0 O172099999999