ENTRY 30421 20090310 31353042100000001 SUBENT 30421001 20090310 31353042100100001 BIB 11 30 3042100100002 INSTITUTE (3CZRUJF,4ZZZDUB) 3042100100003 Last author (Popov) from Dubna,RUSSIA. 3042100100004 REFERENCE (J,CZJ/B,27,(10),1095,197710) 3042100100005 (R,UJF-3303.F,1974) Brief rep.143Nd only. Exfor302770033042100100006 AUTHOR (J.Kvitek,Z.Kosina,J.Hoffmann,Yu.P.Popov) 3042100100007 TITLE The (n,a) reaction measurements on Nd-143 and Hf-180 3042100100008 with thermal neutrons. 3042100100009 FACILITY (REAC,3CZRUJF) VVR-S reactor at Rez 3042100100010 INC-SOURCE (REAC) Horizontal beam hole 3042100100011 INC-SPECT Thermal neutron flux of about 10**8 n/cm2/sec. 3042100100012 Compiler's note = 3042100100013 For this kind of experiments, incoming neutron energy 3042100100014 is desirable to be close to the neutron resonance 3042100100015 (whether positive or negative),from where (n,a) could 3042100100016 be observable, and high neutron flux is essential to 3042100100017 get this low probability phenomena. 'SPA' has been used3042100100018 in this sense. 3042100100019 METHOD (EDE) Direct counting of emitted alpha by the counter 3042100100020 telescope. 3042100100021 DETECTOR (TELES,SOLST) 3042100100022 Telescope consisting of 'dE/dx' and 'E' silicone 3042100100023 surface barriers detectors with the thickness of 3042100100024 1.1/10**3 and 1./10**2 cm, respectively. 3042100100025 Energy and efficiency calibration were performed with 3042100100026 alpha spectrum from Sm-149(n,a) reaction. 3042100100027 STATUS (APRVD) Approved by Kvitek, 79/11/05. 3042100100028 HISTORY (19771108C) KO. 3042100100029 (19800922U) KO.-'Aprvd' added. correction of 'institute3042100100030 (19801229U) OS. Monitor coding in subentry 2 corr. 3042100100031 (20090310A) SD:Updated to new date formats,lower case. 3042100100032 ENDBIB 30 0 3042100100033 COMMON 1 3 3042100100034 EN-DUMMY 3042100100035 EV 3042100100036 2.5300E-02 3042100100037 ENDCOMMON 3 0 3042100100038 ENDSUBENT 37 0 3042100199999 SUBENT 30421002 20090310 31353042100200001 BIB 9 18 3042100200002 REACTION (60-ND-143(N,A)58-CE-140,PAR,SIG,,SPA) 3042100200003 EXP-YEAR (1974) 3042100200004 SAMPLE Nd(2)-O(3) enriched in Nd-143 up to 83.2%. 3042100200005 25 cm2, thickness of about 1./10**4 g/cm2. 3042100200006 MONITOR (60-ND-143(N,A)58-CE-140,PAR,SIG,,MXW) = 21.28 mb. 3042100200007 MONIT-REF (,N.S.OAKEY+,J,PL/B,26,662,1968) 3042100200008 COMMENT Measuring (irradiation) time was 1700 hours. 3042100200009 The alpha energies corresponding to the peaks are taken3042100200010 from Oakey+,Phys.Lett.26B(1968)662 and ibid 24B('67)1423042100200011 and Bischf et al.,Czech.J.Phys.B22(1972)9. 3042100200012 FLAG (1.) Corresponding to the peak 'B', 3042100200013 (2.) corresponding to the peak 'C', 3042100200014 (3.) corresponding to the peak 'D', 3042100200015 (4.) corresponding to the peaks 'E' through 'H' 3042100200016 in Fig.1 of Czech.J.Phys.B27(1977)195. 3042100200017 STATUS (TABLE) From Czech.J.Phys.B27(1977)1095. 3042100200018 This entry replaces EXFOR 30277.003 3042100200019 ERR-ANALYS (DATA-ERR) No further information. 3042100200020 ENDBIB 18 0 3042100200021 COMMON 1 3 3042100200022 MONIT 3042100200023 MB 3042100200024 2.1280E+01 3042100200025 ENDCOMMON 3 0 3042100200026 DATA 6 4 3042100200027 E E-MIN E-MAX DATA DATA-ERR FLAG 3042100200028 MEV MEV MEV MB MB NO-DIM 3042100200029 7.9000E+00 1.4000E-01 2.0000E-02 1.0000E+003042100200030 7.6500E+00 2.3000E-01 2.0000E-02 2.0000E+003042100200031 7.5000E+00 1.0000E-01 2.0000E-02 3.0000E+003042100200032 7.0000E+00 7.2000E+00 1.6000E-01 3.0000E-02 4.0000E+003042100200033 ENDDATA 6 0 3042100200034 ENDSUBENT 33 0 3042100299999 SUBENT 30421003 20090310 31353042100300001 BIB 9 16 3042100300002 REACTION (60-ND-143(N,A)58-CE-140,PAR,SIG,G,SPA) 3042100300003 EXP-YEAR (1974) 3042100300004 SAMPLE Nd(2)-O(3) enriched in Nd-143 to 83.2%. 3042100300005 MONITOR (60-ND-143(N,A)58-CE-140,PAR,SIG,,SPA) 3042100300006 21.28mb was used. 3042100300007 MONIT-REF (,N.S.OAKEY+,J,PL/B,26,662,1968) 3042100300008 EN-SEC (E-APRX,A) 3042100300009 COMMENT Measuring (irradiation) time was 1700 hours. 3042100300010 The presence of a relatively broad peak at an energy 3042100300011 of about 8.5 MeV tentatively was ascribed to the 3042100300012 (n,gamma alpha) reaction. 3042100300013 It corresponds to the peak 'p' in Fig1 of Czech.J.Phys.3042100300014 B27(1977)195 3042100300015 STATUS (TABLE) From Czech.J.Phys.B27(1977)195. 3042100300016 This entry replaces EXFOR 30277.003. 3042100300017 ERR-ANALYS (DATA-ERR) No further information. 3042100300018 ENDBIB 16 0 3042100300019 COMMON 1 3 3042100300020 MONIT 3042100300021 MB 3042100300022 2.1280E+01 3042100300023 ENDCOMMON 3 0 3042100300024 DATA 3 1 3042100300025 E-APRX DATA DATA-ERR 3042100300026 MEV MB MB 3042100300027 8.5000E+00 9.0000E-01 2.0000E-01 3042100300028 ENDDATA 3 0 3042100300029 ENDSUBENT 28 0 3042100399999 SUBENT 30421004 20090310 31353042100400001 BIB 8 21 3042100400002 REACTION (72-HF-180(N,A)70-YB-177,,SIG,,SPA) 3042100400003 SAMPLE 2 Samples containing 5.19 mg and 3.4 mg of Hf-O(2). 3042100400004 Natural content of Hf-180. 3042100400005 The targets were produced by successive deposition of 3042100400006 the solution of ''Hf(C(9)-H(6)-ON)4 '' compound. 3042100400007 ANALYSIS Experimental value of the ratio 3042100400008 sig(n,a)/sig(n,g) = (38.5+-0.5)/10**3 by Alam and 3042100400009 Seghel,Nucl.Phys, A205(1973)614 (exfor30249) 3042100400010 and (n,g) cross-section = 12.6+-0.7 b 3042100400011 from BNL-325(1973) gives the estimated value for (n,a) 3042100400012 to be '' 480 mb''. 3042100400013 MONITOR (62-SM-149(N,A)60-ND-146,PAR,SIG,,SPA) 3042100400014 MONIT-REF (30153001,J.BISCHOF+,J,CZJ/B,22,9,1972) 3042100400015 (,N.S.OAKEY,J,PL/B,24,142,1967) 3042100400016 COMMENT The alpha spectrum was measured for 105 hours. 3042100400017 No alpha line was observed in expected energy (E(alpha)3042100400018 = about 6.7 MeV). 3042100400019 Statistical analysis of experimental data gives the 3042100400020 maximum value of existence of alpha transition. 3042100400021 STATUS (TABLE) From Czech.J.Phys.B27(1977)195. 3042100400022 ERR-ANALYS No error given. 3042100400023 ENDBIB 21 0 3042100400024 NOCOMMON 0 0 3042100400025 DATA 1 1 3042100400026 DATA-MAX 3042100400027 MB 3042100400028 1.5000E-01 3042100400029 ENDDATA 3 0 3042100400030 ENDSUBENT 29 0 3042100499999 ENDENTRY 4 0 3042199999999