ENTRY A0441 20240909 A117A0441 0 1 SUBENT A0441001 20240909 A117A0441 1 1 BIB 13 73 A0441 1 2 TITLE Incomplete fusion reactions: analysis of excitation A0441 1 3 functions and recoil range distributions in 16-O+51-V A0441 1 4 AUTHOR (S.Mukherjee, A.Sharma, S.Sodaye, B.S.Tomar, A.Goswami,A0441 1 5 S.B.Manohar) A0441 1 6 REFERENCE (J,EPJ/A,12,199,2001) A0441 1 7 INSTITUTE (3INDVUU) School of Studies in Physics, Vikram A0441 1 8 University. A0441 1 9 (3INDTRM) Radiochemistry division A0441 1 10 FACILITY (VDGT,3INDTRM) BARC-TIFR Pelletron accelerator A0441 1 11 COMMENT Abstract. Incomplete fusion reactions were A0441 1 12 investigated by measuring the excitation functions of A0441 1 13 nine evaporation residues in 16-O + 51-V reaction in A0441 1 14 the beam energy 4-6 MeV/amu, using the well-known A0441 1 15 recoil catcher technique and gamma-ray spectrometry. A0441 1 16 The experimental data were compared with that obtained A0441 1 17 from MONTE CARLO simulation calculations using the A0441 1 18 PACE2 code. The results indicate the presence of A0441 1 19 incomplete fusion process in the production of two A0441 1 20 alpha emission products. This was further confirmed by A0441 1 21 the measurement of recoil range distribution of these A0441 1 22 isotopes at 96 MeV beam energy. Calculations of the A0441 1 23 average angular momentum associated with these productsA0441 1 24 revealed the peripheral nature of these incomplete A0441 1 25 fusion reactions. A0441 1 26 /Special remark by authors/. In case of cobalt productsA0441 1 27 the experimental data are much higher than the A0441 1 28 calculated data indicating the contribution from A0441 1 29 incomplete fusion reactions. These incomplete fusion A0441 1 30 reactions can be of the 51-V(16-O,8-Be)59-Co* type. A0441 1 31 The excited 59-Co* nucleus may subsequently de-excite A0441 1 32 by neutron emission to give 58-56 Co. In the case of A0441 1 33 the evaporation residues 61-Co, there may be a breakup A0441 1 34 of 16-O into 12-C and 4-He and subsequent incomplete A0441 1 35 fusion of 12-C in the reaction 51-V(16-O,A)63-Cu; the A0441 1 36 evaporation of two protons leads to the formation of A0441 1 37 the residues. It was found that the incomplete fusion A0441 1 38 contributions with respect to the complete fusion A0441 1 39 cross-sections increase from 3% at 60 MeV to about 20% A0441 1 40 above 90 MeV. A0441 1 41 REL-REF (R,,L.C.Northcliffe+,J,ND/A,7,233,1970) To calculate A0441 1 42 the beam energy degradation in each target foil A0441 1 43 METHOD (EXTB) The target samples were irradiated with the A0441 1 44 collimated 16-O beam of diameter 1-2 mm. A0441 1 45 (STTA) A0441 1 46 (ACTIV) Several irradiations were carried out for each A0441 1 47 such stack of target and degraders to encompass the A0441 1 48 16-O beam energy between 58 and 94 MeV. A0441 1 49 (GSPEC) After the irradiation, the target and the A0441 1 50 catcher foil were counted in the live time mode. A0441 1 51 The recording time period were chosen in such a way so A0441 1 52 as to get the good counting statistics. The duration A0441 1 53 of counting was initially kept in the order of seconds A0441 1 54 and subsequently increased to longer periods for A0441 1 55 counting long-lived products. A0441 1 56 SAMPLE Stacks consisting of two self-supporting targets A0441 1 57 of vanadium, each of thickness 2.1 mg/cm2 and purity A0441 1 58 99.99%, approximately, separated by aluminum foils, A0441 1 59 2 mg/cm2, approximately. A0441 1 60 DETECTOR (HPGE) A0441 1 61 ADD-RES (RANGE) A0441 1 62 ERR-ANALYS (ERR-T) Total uncertainty A0441 1 63 (ERR-S,1.,4.) Uncertainty in counting statistics (1-4%)A0441 1 64 (ERR-1,5.,8.) Uncertainty in target thickness (5-8%), A0441 1 65 (ERR-2) Uncertainty in detector efficiency (4%), A0441 1 66 (ERR-3,,5.) Uncertainty in beam fluence (<5%) and A0441 1 67 (ERR-4,5.,10.) Uncertainty in gamma-ray intensity A0441 1 68 values (5-10%) A0441 1 69 HISTORY (20020916C) A0441 1 70 (20030113U) Last checking has been done. A0441 1 71 (20160214A) SD: DECAY-DATA corrected in Subent 010. A0441 1 72 BIB, ERR-ANALYS updated. ANALYSIS (AREA) deleted (not A0441 1 73 relevant). A0441 1 74 (20240909A) SD: Corrections in all Subents. A0441 1 75 ENDBIB 73 0 A0441 1 76 COMMON 1 3 A0441 1 77 ERR-2 A0441 1 78 PER-CENT A0441 1 79 4. A0441 1 80 ENDCOMMON 3 0 A0441 1 81 ENDSUBENT 80 0 A0441 199999 SUBENT A0441002 20240909 A117A0441 2 1 BIB 4 5 A0441 2 2 REACTION (23-V-51(8-O-16,2N)31-GA-65,,SIG) A0441 2 3 DECAY-DATA (31-GA-65,15.2MIN,DG,115.,0.55) A0441 2 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 1 A0441 2 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 2 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 2 7 ENDBIB 5 0 A0441 2 8 COMMON 2 3 A0441 2 9 EN-ERR-DIG ERR-DIG A0441 2 10 MEV PER-CENT A0441 2 11 0.02 0.07 A0441 2 12 ENDCOMMON 3 0 A0441 2 13 DATA 3 3 A0441 2 14 EN DATA ERR-T A0441 2 15 MEV MB MB A0441 2 16 58.21 7.369E+00 1.178E+00 A0441 2 17 69.29 1.169E+00 1.794E-01 A0441 2 18 71.98 4.569E-01 7.305E-02 A0441 2 19 ENDDATA 5 0 A0441 2 20 ENDSUBENT 19 0 A0441 299999 SUBENT A0441003 20240909 A117A0441 3 1 BIB 4 5 A0441 3 2 REACTION (23-V-51(8-O-16,X)30-ZN-63,CUM,SIG) A0441 3 3 DECAY-DATA (30-ZN-63,38.7MIN,DG,670.,0.084) A0441 3 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 1 A0441 3 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 3 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 3 7 ENDBIB 5 0 A0441 3 8 COMMON 2 3 A0441 3 9 EN-ERR-DIG ERR-DIG A0441 3 10 MEV PER-CENT A0441 3 11 0.02 0.07 A0441 3 12 ENDCOMMON 3 0 A0441 3 13 DATA 3 6 A0441 3 14 EN DATA ERR-T A0441 3 15 MEV MB MB A0441 3 16 58.16 2.795E+01 4.083E+00 A0441 3 17 69.26 7.651E+01 1.223E+01 A0441 3 18 71.98 9.106E+01 1.339E+01 A0441 3 19 82.02 1.028E+02 1.577E+01 A0441 3 20 87.03 3.723E+01 5.952E+00 A0441 3 21 93.28 2.965E+01 4.552E+00 A0441 3 22 ENDDATA 8 0 A0441 3 23 ENDSUBENT 22 0 A0441 399999 SUBENT A0441004 20240909 A117A0441 4 1 BIB 4 5 A0441 4 2 REACTION (23-V-51(8-O-16,X)30-ZN-62,CUM,SIG) A0441 4 3 DECAY-DATA (30-ZN-62,9.186HR,DG,597.,0.28) A0441 4 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 1 A0441 4 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 4 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 4 7 ENDBIB 5 0 A0441 4 8 COMMON 2 3 A0441 4 9 EN-ERR-DIG ERR-DIG A0441 4 10 MEV PER-CENT A0441 4 11 0.02 0.07 A0441 4 12 ENDCOMMON 3 0 A0441 4 13 DATA 3 3 A0441 4 14 EN DATA ERR-T A0441 4 15 MEV MB MB A0441 4 16 82.06 3.011E+00 4.399E-01 A0441 4 17 87.03 1.582E+01 2.174E+00 A0441 4 18 93.28 1.204E+01 1.655E+00 A0441 4 19 ENDDATA 5 0 A0441 4 20 ENDSUBENT 19 0 A0441 499999 SUBENT A0441005 20240909 A117A0441 5 1 BIB 4 5 A0441 5 2 REACTION (23-V-51(8-O-16,X)29-CU-61,CUM,SIG) A0441 5 3 DECAY-DATA (29-CU-61,3.3HR,DG,656.,0.10) A0441 5 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 2 A0441 5 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 5 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 5 7 ENDBIB 5 0 A0441 5 8 COMMON 2 3 A0441 5 9 EN-ERR-DIG ERR-DIG A0441 5 10 MEV PER-CENT A0441 5 11 0.02 0.04 A0441 5 12 ENDCOMMON 3 0 A0441 5 13 DATA 3 6 A0441 5 14 EN DATA ERR-T A0441 5 15 MEV MB MB A0441 5 16 58.22 7.494E+01 1.147E+01 A0441 5 17 69.31 6.459E+01 9.883E+00 A0441 5 18 71.99 8.901E+01 1.362E+01 A0441 5 19 82.07 9.537E+01 1.413E+01 A0441 5 20 87.05 3.442E+01 5.266E+00 A0441 5 21 93.30 3.949E+01 6.043E+00 A0441 5 22 ENDDATA 8 0 A0441 5 23 ENDSUBENT 22 0 A0441 599999 SUBENT A0441006 20240909 A117A0441 6 1 BIB 4 5 A0441 6 2 REACTION (23-V-51(8-O-16,X)29-CU-60,CUM,SIG) A0441 6 3 DECAY-DATA (29-CU-60,23.7MIN,DG,826.,0.88) A0441 6 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 2 A0441 6 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 6 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 6 7 ENDBIB 5 0 A0441 6 8 COMMON 2 3 A0441 6 9 EN-ERR-DIG ERR-DIG A0441 6 10 MEV PER-CENT A0441 6 11 0.02 0.04 A0441 6 12 ENDCOMMON 3 0 A0441 6 13 DATA 3 6 A0441 6 14 EN DATA ERR-T A0441 6 15 MEV MB MB A0441 6 16 58.18 9.273E-01 1.464E-01 A0441 6 17 69.27 1.076E+01 1.646E+00 A0441 6 18 71.95 1.206E+01 1.787E+00 A0441 6 19 82.07 1.616E+01 2.473E+00 A0441 6 20 87.09 1.046E+01 1.600E+00 A0441 6 21 93.30 1.369E+01 2.028E+00 A0441 6 22 ENDDATA 8 0 A0441 6 23 ENDSUBENT 22 0 A0441 699999 SUBENT A0441007 20240909 A117A0441 7 1 BIB 4 5 A0441 7 2 REACTION (23-V-51(8-O-16,X)27-CO-61,CUM,SIG) A0441 7 3 DECAY-DATA (27-CO-61,1.65HR,DG,908.6,0.03) A0441 7 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 3 A0441 7 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 7 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 7 7 ENDBIB 5 0 A0441 7 8 COMMON 2 3 A0441 7 9 EN-ERR-DIG ERR-DIG A0441 7 10 MEV PER-CENT A0441 7 11 0.02 0.2 A0441 7 12 ENDCOMMON 3 0 A0441 7 13 DATA 3 6 A0441 7 14 EN DATA ERR-T A0441 7 15 MEV MB MB A0441 7 16 58.25 1.324E+01 1.946E+00 A0441 7 17 69.30 1.715E+01 2.699E+00 A0441 7 18 71.98 2.012E+01 3.062E+00 A0441 7 19 82.07 2.170E+01 3.415E+00 A0441 7 20 87.10 1.230E+01 1.872E+00 A0441 7 21 93.35 1.392E+01 2.119E+00 A0441 7 22 ENDDATA 8 0 A0441 7 23 ENDSUBENT 22 0 A0441 799999 SUBENT A0441008 20240909 A117A0441 8 1 BIB 4 6 A0441 8 2 REACTION (23-V-51(8-O-16,X)27-CO-58,,SIG) A0441 8 3 DECAY-DATA (27-CO-58-G,70.2D,DG,811.,0.994) A0441 8 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 3 A0441 8 5 HISTORY (20240909A) SD: SF4=Co-58g -> Co-58; SF5=M+ deleted A0441 8 6 from REACTION code. Data were re-digitized. STATUS A0441 8 7 added. EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 8 8 ENDBIB 6 0 A0441 8 9 COMMON 2 3 A0441 8 10 EN-ERR-DIG ERR-DIG A0441 8 11 MEV PER-CENT A0441 8 12 0.02 0.2 A0441 8 13 ENDCOMMON 3 0 A0441 8 14 DATA 3 6 A0441 8 15 EN DATA ERR-T A0441 8 16 MEV MB MB A0441 8 17 58.23 3.931E+01 5.983E+00 A0441 8 18 69.28 7.816E+01 1.230E+01 A0441 8 19 71.97 9.057E+01 1.425E+01 A0441 8 20 82.10 8.696E+01 1.368E+01 A0441 8 21 87.08 7.656E+01 1.165E+01 A0441 8 22 93.33 8.770E+01 1.335E+01 A0441 8 23 ENDDATA 8 0 A0441 8 24 ENDSUBENT 23 0 A0441 899999 SUBENT A0441009 20240909 A117A0441 9 1 BIB 4 5 A0441 9 2 REACTION (23-V-51(8-O-16,X)27-CO-57,CUM,SIG) A0441 9 3 DECAY-DATA (27-CO-57,271.79D,DG,122.,0.855) A0441 9 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 4 A0441 9 5 HISTORY (20240909A) SD: Data were re-digitized. STATUS added. A0441 9 6 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 9 7 ENDBIB 5 0 A0441 9 8 COMMON 2 3 A0441 9 9 EN-ERR-DIG ERR-DIG A0441 9 10 MEV PER-CENT A0441 9 11 0.02 0.2 A0441 9 12 ENDCOMMON 3 0 A0441 9 13 DATA 3 6 A0441 9 14 EN DATA ERR-T A0441 9 15 MEV MB MB A0441 9 16 58.24 4.785E+00 7.279E-01 A0441 9 17 69.35 9.342E+01 1.421E+01 A0441 9 18 72.04 5.802E+01 8.825E+00 A0441 9 19 82.12 4.661E+01 7.332E+00 A0441 9 20 87.13 1.071E+02 1.684E+01 A0441 9 21 93.38 1.249E+02 1.964E+01 A0441 9 22 ENDDATA 8 0 A0441 9 23 ENDSUBENT 22 0 A0441 999999 SUBENT A0441010 20240909 A117A0441 10 1 BIB 4 7 A0441 10 2 REACTION (23-V-51(8-O-16,X)27-CO-56,CUM,SIG) A0441 10 3 DECAY-DATA (27-CO-56,77.2D,DG,1238.,0.66) A0441 10 4 STATUS (CURVE,,S.Mukherjee+,J,EPJ/A,12,199,2001) Fig. 4 A0441 10 5 HISTORY (20160214A) SD: DECAY-DATA corrected according to the A0441 10 6 Tbl. 1 from EPJ/A,12,199,2001 A0441 10 7 (20240909A) SD: Data were re-digitized. STATUS added. A0441 10 8 EN-ERR -> EN-ERR-DIG; DATA-ERR -> ERR-T. A0441 10 9 ENDBIB 7 0 A0441 10 10 COMMON 2 3 A0441 10 11 EN-ERR-DIG ERR-DIG A0441 10 12 MEV PER-CENT A0441 10 13 0.02 0.2 A0441 10 14 ENDCOMMON 3 0 A0441 10 15 DATA 3 3 A0441 10 16 EN DATA ERR-T A0441 10 17 MEV MB MB A0441 10 18 82.10 2.420E+00 3.314E-01 A0441 10 19 87.10 1.269E+01 1.915E+00 A0441 10 20 93.39 2.311E+01 3.635E+00 A0441 10 21 ENDDATA 5 0 A0441 10 22 ENDSUBENT 21 0 A0441 1099999 ENDENTRY 10 0 A044199999999