ENTRY O0897 20030501 0000O089700000001 SUBENT O0897001 20030501 0000O089700100001 BIB 9 36 O089700100002 TITLE 70Ge(A,G)74Se cross section measurements at energies O089700100003 of astrophysical interest O089700100004 AUTHOR (Zs.Fulop, A.Z.Kiss, E.Somorjai, C.E.Rolfs, O089700100005 H.P.Trautvetter, T.Rauscher, H.Oberhummer) O089700100006 REFERENCE (J,ZP/A,355,203,1996) O089700100007 INSTITUTE (3HUNDEB) O089700100008 (2GERBOC) O089700100009 (2SWTBAS) Institute for theoretical physics. O089700100010 (2AUSTHV) O089700100011 FACILITY (CYCLO,3HUNDEB) O089700100012 (DYNAM,2GERBOC) O089700100013 The experiment has been performed by the MGC cyclotron O089700100014 in Debrecen and the dynamitron tandem accelerator in O089700100015 Bochum from e=5.0 MeV up to 7.8 MeV, using a He++-BeamO089700100016 METHOD (SITA) See sample O089700100017 (EXTB) An average He++ target current of 1 O089700100018 particle-mu-a has been used without any target O089700100019 deterioration. O089700100020 (BCINT) An electric field of 300V was applied to O089700100021 eliminate the effect of secondary electrons on O089700100022 beam-integration. O089700100023 (GSPEC) O089700100024 (COINC) O089700100025 DETECTOR (HPGE) O089700100026 (COIN,HPGE,GELI) O089700100027 SAMPLE High beam current, long measuring time and improved O089700100028 detection efficiency is necessary to compensate the O089700100029 expected small reaction cross section. For reducing O089700100030 the background yield - predominantly caused by high O089700100031 energy gamma-rays and neutrons from the 13-C(A,N)- O089700100032 thin, 0.1 mu-m, gold foil was used as target backing O089700100033 and a liquid nitrogen shroud close to the target servedO089700100034 against carbon deposition. The evaporated 70-Ge O089700100035 enriched (86.5%) target had a thickness of 36 mu-g/cm2.O089700100036 HISTORY (20010802C) O089700100037 (20030501U) Last checking has been done. O089700100038 ENDBIB 36 0 O089700100039 NOCOMMON 0 0 O089700100040 ENDSUBENT 39 0 O089700199999 SUBENT O0897002 20030501 0000O089700200001 BIB 5 29 O089700200002 REACTION (32-GE-70(A,G)34-SE-74,,SIG) O089700200003 PART-DET (G) O089700200004 COMMENT - By authors. The total cross section of the reaction O089700200005 was obtained using the intensity of the 635-KeV peak O089700200006 only with a small correction due to a loss through O089700200007 another ground state transition. The transition is fed O089700200008 by many transitions, therefore a correction for angularO089700200009 distribution is not necessery. O089700200010 The coincidence measurements proved by presence of O089700200011 further gamma lines from the deexcitation of 74-Se, in O089700200012 addition to the 635-KeV transition in the single O089700200013 spectra, however, since all the observed transitions goO089700200014 through the 635-KeV transition, no correction in the O089700200015 cross section was necessary. O089700200016 - By compiler: O089700200017 1. Possible production of ground state of 74-Se due to O089700200018 854-KeV e0 transition is not taken in account. O089700200019 2. Authors' data for sum of projectile and target O089700200020 nucleus kinetic energies were recalculated for O089700200021 projectile energy in Lab.-System By compiler. The O089700200022 authors' data are saved in MISC. O089700200023 ERR-ANALYS (ERR-T) The errors are mainly due to the errors in: O089700200024 1. Peak area, O089700200025 2. Detector efficiency, O089700200026 3. Beam integration, O089700200027 4. Number of target atoms, O089700200028 5. The corrections applied. O089700200029 MISC-COL (MISC) The sum of projectile and target nucleus kineticO089700200030 energies in C.M.-System O089700200031 ENDBIB 29 0 O089700200032 NOCOMMON 0 0 O089700200033 DATA 4 13 O089700200034 EN DATA ERR-T MISC O089700200035 MEV MICRO-B MICRO-B MEV O089700200036 5.05 0.4 0.22 4.777 O089700200037 5.4 0.71 0.38 5.108 O089700200038 5.75 2.8 0.7 5.439 O089700200039 6. 8.9 2.7 5.676 O089700200040 6.406 34. 8. 6.06 O089700200041 6.6 63. 10. 6.243 O089700200042 6.886 138. 25. 6.514 O089700200043 7.151 299. 46. 6.764 O089700200044 7.3 389. 60. 6.905 O089700200045 7.492 375. 87. 7.087 O089700200046 7.673 650. 150. 7.258 O089700200047 7.8 920. 140. 7.378 O089700200048 7.956 1080. 240. 7.526 O089700200049 ENDDATA 15 0 O089700200050 ENDSUBENT 49 0 O089700299999 SUBENT O0897003 20030501 0000O089700300001 BIB 2 2 O089700300002 REACTION (32-GE-70(A,G)34-SE-74,,SGV,,MXW) O089700300003 STATUS (DEP,O0897002) O089700300004 ENDBIB 2 0 O089700300005 NOCOMMON 0 0 O089700300006 DATA 2 21 O089700300007 KT DATA O089700300008 K9 CM3/S/MOL O089700300009 0.3 7.81E-40 O089700300010 0.4 1.05E-33 O089700300011 0.5 2.34E-29 O089700300012 0.6 4.74E-26 O089700300013 0.7 2.03E-23 O089700300014 0.8 2.98E-21 O089700300015 0.9 1.99E-19 O089700300016 1. 7.34E-18 O089700300017 1.5 2.28E-12 O089700300018 2. 6.05E-9 O089700300019 2.5 1.46E-6 O089700300020 3. 8.13E-5 O089700300021 3.5 1.72E-3 O089700300022 4. 1.87E-2 O089700300023 4.5 1.26E-1 O089700300024 5. 5.85E-1 O089700300025 6. 5.71E+0 O089700300026 7. 2.59E+1 O089700300027 8. 6.83E+1 O089700300028 9. 1.23E+2 O089700300029 10. 1.74E+2 O089700300030 ENDDATA 23 0 O089700300031 ENDSUBENT 30 0 O089700399999 ENDENTRY 3 0 O089799999999