ENTRY 22939 20110206
SUBENT C 22939001 20110206
BIB 14 48
TITLE Stellar (n,gamma) cross section of p-process isotopes
Part I: Pd-102, Te-120, Ba-130,-132 and Dy-156.
AUTHOR (I.Dillmann, C.Domingo-Pardo, M.Heil, F.Kaeppeler,
S.Walter, S.Dababneh,T.Rauscher, F.K.Thielemann,R.Plag)
(J,EPJ/AS,27,129,2006) Preliminary data.
INSTITUTE (2GERMUN) I.Dillmann
(2GERGSI) C.Domingo-Pardo, M.Heil
(2GERKFK) F.Kaeppeler, S.Walter
(2SWTBAS) T.Rauscher, F.K.Thielemann
Al Balqa Applied University,Salt 19117,Jordan.
REL-REF (R,,J.De Laeter+,J,PAC,75,683,2003)
Isotopic abundances for samples.
Details of clover detectors.
(M,,H.Beer+,J,PR/C,21,534,1980) Details of exp.method
FACILITY (VDG,2GERKFK) The Karlsruhe 3.7-MV Van de Graaff
accelerator operated n DC mode with current of about
100 microA (for Li targets) or up to 150 microA for
INC-SOURCE (P-LI7) Neutrons were produced via the Li-7(P,N)Be-7
source by bombarding a 30-mum thick layers of metallic
Li or crystalline LiF on a water-cooled Cu-backings
with protons of 1912 keV. Neutrons were emitted into
forward cone of 120 deg opening angle.
METHOD (ACTIV) Several independent activations were carried
out for each isotope with modified exp. parameters.
(STTA) Samples were irradiated in close contact with
the Li target.
MONITOR ((MONIT)79-AU-197(N,G)79-AU-198,,SIG) For neutron flux.
HL error 0.00021 day, intensity 0.9558+-0.0012.
DETECTOR (GLASD) At irradiation the neutron flux was recorded
in intervals of 60 or 90sec using a Li-6 glass detector
91 cm downstream of Li target.
ADD-RES Using the energy dependencies of normalized evaluated
cross sections MACS were extrapolated in energy range
kT=160-260 keV. Given in Table XVI.
HISTORY (20061220C) S.M./ M.M.
(20100518A) M.M. Reference J,PR/C,81 was added.
BIB information was updated.
Subents 006-023 were added.
(20110206A) SD: Ref. on Europ.Phys.Jour. A 27,129,2006
ENDBIB 48 0
COMMON 3 3
KT-NRM MONIT MONIT-ERR
KEV MB MB
25. 586. 8.
ENDCOMMON 3 0
ENDSUBENT 55 0
SUBENT 22939004 20100518
BIB 8 27
Average/(most probable velocity).Stellar c-s
ANALYSIS .Experimental cross section were extrapolated from
a thermal energy of KT=25 keV by means of the
theoretically predicted energy dependence.
SAMPLE .Natural samples of elemental Ba-130 Isotopic abundance
0.106+-0.001%. Thin pellets were pressed from powders
of BaCO3. Dried at 300 and 800 deg Celcius.
Enclosed in 15. microm thick aluminium foil and
sandwiched between 10-30 microm thick gold foils of
the same diameter.
CORRECTION .Stellar c-s was corrected for temperature-dependent
stellar enhancement factor SEF:
STATUS (TABLE) Table 2 and text p.13 of J,EPJ/A,27,129,2006
(SPSDD,22939021) Preliminary data were superseded by
data of Subent 22939021.
HISTORY (20100518D) Data were deleted as superseded.
ENDBIB 27 0
COMMON 1 3
ENDCOMMON 3 0
NODATA 0 0
ENDSUBENT 35 0