ENTRY C3084 20250825 C308400000001 SUBENT C3084001 20250825 20260228 C308400100001 BIB 12 55 C308400100002 TITLE Cross section measurements for the production of 49, C308400100003 51Cr and 47Sc from proton irradiation of natural C308400100004 vanadium up to 24 MeV C308400100005 AUTHOR (S.J.Cingoranelli,L.Burnett,E.Putnam,S.E.Lapi) C308400100006 REFERENCE (J,ARI,212,111469,2024) C308400100007 #doi:10.1016/j.apradiso.2024.111469 C308400100008 INSTITUTE (1USAUAL) C308400100009 FACILITY (CYCLO,1USAUAL) TR-24 cyclotron. C308400100010 DETECTOR (HPGE) A calibrated Canberra GC2018 High-Purity C308400100011 Germanium (HPGe) detector. C308400100012 SAMPLE Vanadium (2N8) and tantalum (3N8) sheets of 0.12- and C308400100013 2-mm thickness, respectively, were purchased from C308400100014 EPSI Metals (Ashland, OR, USA), and 0.025 mm copper C308400100015 foils (98.8% purity) were purchased from Goodfellow. C308400100016 The stacked foil target design used during C308400100017 irradiation. The Ta target holder (coin) had a C308400100018 thickness of 2 mm, a width of 25 mm, and a 1 mm deep C308400100019 divot in the center with a diameter of 10 mm. First, C308400100020 a Cu foil was placed in the divot, followed by V, Cu, C308400100021 V, and Cu foil on top. The foils were held in place C308400100022 with a retaining ring. C308400100023 METHOD (ACTIV,CHSEP) After irradiation, targets were C308400100024 collected within 10 min, and each irradiated foil was C308400100025 dissolved in 5 mL of 7 M HNO3. Two samples were C308400100026 taken: one was a 100 microL sample from the dissolved C308400100027 solution, diluted to 1 mL and the second sample was 1 C308400100028 mL taken from the dissolved solution. The 100 microL C308400100029 samples were used for immediate gamma ray C308400100030 spectrometry measurements (within 30 min by the End C308400100031 Of Bombardment-EOB), measuring the 63Zn and 49Cr C308400100032 activities in the Cu and V foils, respectively. C308400100033 ANALYSIS (DECAY) Equation was used to determine the activity C308400100034 of each radionuclide yielded at the End Of C308400100035 Bombardment (EOB) C308400100036 A=(Np)/(epsilon*tL*Cd*Igamma*exp(-lambda*tD)), C308400100037 where Np is the net peak area (Number of counts), C308400100038 epsilon is detector efficiency at photopeak, C308400100039 lambda is the decay constant of the radionuclide, tL C308400100040 is the live time of the detector (s), Igamma is the C308400100041 branching ratio of the gamma-ray associated with the C308400100042 photopeak, tD is the time passed since End of C308400100043 Bombardment (EOB) in respect to measurement time (s), C308400100044 and Cd is the correction factor. C308400100045 ERR-ANALYS (DATA-ERR) The error propagation for these cross C308400100046 sections was calculated where the sources of error C308400100047 were collected as absolute uncertainties. Briefly, C308400100048 the half-lives, half-life uncertainties, gamma rays, C308400100049 gamma ray branching ratio and uncertainties were C308400100050 obtained from National Nuclear Data Center. The C308400100051 uncertainty for all net peak areas was collected with C308400100052 each measurement, and each selected beam energy C308400100053 experiment was repeated a total of 4-5 times. C308400100054 CORRECTION Results do not include a correction for the decay of C308400100055 the nuclides that occurs during the irradiation. C308400100056 HISTORY (20250825C) BP C308400100057 ENDBIB 55 0 C308400100058 NOCOMMON 0 0 C308400100059 ENDSUBENT 58 0 C308400199999 SUBENT C3084002 20250825 20260228 C308400200001 BIB 3 3 C308400200002 REACTION (23-V-0(P,X)21-SC-47,,SIG) C308400200003 DECAY-DATA (21-SC-47,3.3D,DG,159.4,0.683) C308400200004 STATUS (TABLE,,S.J.Cingoranelli+,J,ARI,212,111469,2024) Table3C308400200005 ENDBIB 3 0 C308400200006 NOCOMMON 0 0 C308400200007 DATA 4 7 C308400200008 EN EN-RSL DATA DATA-ERR C308400200009 MEV MEV MB MB C308400200010 23.4 0.06 1.66 0.05 C308400200011 22.3 0.53 1.12 0.15 C308400200012 21.1 0.15 0.29 0.06 C308400200013 20.3 0.17 0.08 0.007 C308400200014 19.7 0.04 0.06 0.004 C308400200015 18.8 0.17 0.01 0.001 C308400200016 17.6 0.08 0.003 0.001 C308400200017 ENDDATA 9 0 C308400200018 ENDSUBENT 17 0 C308400299999 SUBENT C3084003 20250825 20260228 C308400300001 BIB 3 3 C308400300002 REACTION (23-V-0(P,X)24-CR-51,,SIG) C308400300003 DECAY-DATA (24-CR-51,27.7D,DG,320.1,0.0991) C308400300004 STATUS (TABLE,,S.J.Cingoranelli+,J,ARI,212,111469,2024) Table3C308400300005 ENDBIB 3 0 C308400300006 NOCOMMON 0 0 C308400300007 DATA 4 8 C308400300008 EN EN-RSL DATA DATA-ERR C308400300009 MEV MEV MB MB C308400300010 23.4 0.06 45.2 6.7 C308400300011 22.3 0.53 98.9 2.4 C308400300012 21.1 0.15 113.7 9.2 C308400300013 20.3 0.17 126.9 2.5 C308400300014 19.7 0.04 151.7 4.9 C308400300015 18.8 0.17 165.6 9.4 C308400300016 17.6 0.08 179.1 4.2 C308400300017 16.8 0.08 249.4 6.6 C308400300018 ENDDATA 10 0 C308400300019 ENDSUBENT 18 0 C308400399999 SUBENT C3084004 20250825 20260228 C308400400001 BIB 3 3 C308400400002 REACTION (23-V-0(P,X)24-CR-49,,SIG) C308400400003 DECAY-DATA (24-CR-49,42.3MIN,DG,62.8,0.164) C308400400004 STATUS (TABLE,,S.J.Cingoranelli+,J,ARI,212,111469,2024) Table3C308400400005 ENDBIB 3 0 C308400400006 NOCOMMON 0 0 C308400400007 DATA 4 6 C308400400008 EN EN-RSL DATA DATA-ERR C308400400009 MEV MEV MB MB C308400400010 23.4 0.06 0.05 0.004 C308400400011 22.3 0.53 0.05 0.005 C308400400012 21.1 0.15 0.02 0.004 C308400400013 20.3 0.17 0.03 0.008 C308400400014 19.7 0.04 0.01 0.001 C308400400015 18.8 0.17 0.01 0.001 C308400400016 ENDDATA 8 0 C308400400017 ENDSUBENT 16 0 C308400499999 ENDENTRY 4 0 C308499999999