ENTRY O1054 20221225 O092O1054 0 1 SUBENT O1054001 20221225 O092O1054 1 1 BIB 12 93 O1054 1 2 TITLE The Sr-88(p,gamma)Y-89 reaction at astrophysically O1054 1 3 relevant energies O1054 1 4 AUTHOR (S.Galanopoulos, P.Demetriou, M.Kokkoris, O1054 1 5 S.Harissopulos, R.Kunz, M.Fey, J.W.Hammer, Gy.Gyurky, O1054 1 6 Zs.Fulop, E.Somorjai, S.Goriely) O1054 1 7 INSTITUTE (2GRCATH,2GERTHS,3HUNDEB,2BLGBRU) O1054 1 8 REFERENCE (J,PR/C,67,015801,2003) O1054 1 9 (J,PR/C,104,025804,2021) - new analysis; screened O1054 1 10 corrected data O1054 1 11 (J,NP/A,688,421,2001) prelim. data of 88Sr(p,gama)89Y O1054 1 12 FACILITY (DYNAM,2GERTHS) 4-MV single-ended dynamitron O1054 1 13 (VDGT,2GRCATH) 5.5-MV T11 Van de Graaff O1054 1 14 SAMPLE The target material was 99.84% enriched in Sr-88, O1054 1 15 this was produced by evaporating Sr-88(NO3)2 powder on O1054 1 16 a 0.4-mm thick tantalum backing. The amount of Sr-88 inO1054 1 17 the target was determined by means of an XRF analysis O1054 1 18 before all measurements. It was also checked at the endO1054 1 19 of the Stuttgart measurements as well as at the end of O1054 1 20 the Athens runs. The thickness of Sr-88 in the target O1054 1 21 before any measurement was 168+-7-mug/cm**2 and the O1054 1 22 material loss was found to be less than 3%. This O1054 1 23 thickness corresponds approximately 12 and 8-KeV at O1054 1 24 beam energies of 2 and 4-MeV, respectively. These O1054 1 25 values were derived using the SRIM code and assuming O1054 1 26 that the target consists of Sr-88 only. However, O1054 1 27 the thickness of the target is defined by its O1054 1 28 stoichiometry that was determined at the end of the O1054 1 29 measurements by performing a nuclear reaction analysis.O1054 1 30 The measurements were necessary to determine correctly O1054 1 31 the proton stopping powers. The measurements were O1054 1 32 performed using a single-charged H2 beam of 1.1-MeV O1054 1 33 energy that was delivered by the tandem accelerator O1054 1 34 of Athens. O1054 1 35 The final amount of Sr-88 in the target, according to O1054 1 36 the XRF analyses, did not differ practically from that O1054 1 37 in the beginning of the measurements allows to O1054 1 38 calculate the maximum total target thickness by varyingO1054 1 39 the ratio of the amount of the Sr-88(NO3)2 to the O1054 1 40 Sr-88(OH)2 phase. The maximum thickness obtained this O1054 1 41 way is 405 mug/cm**2, that corresponds to 44 and 28-KeVO1054 1 42 at 2 and 4-MeV, respectively. This thickness is derivedO1054 1 43 if the target is comprised of the Sr-88(NO3)2 phase O1054 1 44 only. Even in such an extreme case the uncertainty O1054 1 45 entering the determination of the corresponding O1054 1 46 effective energies is less than 0.5%. O1054 1 47 DETECTOR (HPGE) For cross section measurements at E(P) < 3.5 O1054 1 48 MeV (Stuttgart) four large volume HPGE detectors, all O1054 1 49 shielded with BGO crystal for Compton background O1054 1 50 suppression. O1054 1 51 In the cross section measurements carried out in O1054 1 52 Athens one HPGE detector without any BGO shields was O1054 1 53 used. O1054 1 54 METHOD (BCINT) The current of the proton beam was about 10-muAO1054 1 55 at measurements carried out in Stuttgart and approx. O1054 1 56 1.3-muA at measurements carried out in Athens. O1054 1 57 COMMENT *By authors. In experimental setup used in Stuttgart O1054 1 58 the target was placed at 90-degree to the beam axis. O1054 1 59 Its backing was cooled directly with water during the O1054 1 60 whole experiments. The detector were placed on a O1054 1 61 rotating table at distances between 10 and 20-cm front O1054 1 62 the target. O1054 1 63 In experimental setup used in Athens the target was O1054 1 64 placed at 20-degree with respect to the beam axis. O1054 1 65 The distance between the target-center and the O1054 1 66 detector-front was 12-cm. The detector was placed O1054 1 67 on a goniometrical table that could rotate around the O1054 1 68 target with an accuracy better than 1-degree. In order O1054 1 69 to measure gamma angular distributions at each beam O1054 1 70 energy, gamma-singles spectra were taken at six angles O1054 1 71 with the respect to the beam. The target backing was O1054 1 72 cooled with air during all measurements. O1054 1 73 As in case of the measurements in Stuttgart, backgroundO1054 1 74 spectra were also measured, in order to investigate O1054 1 75 possible yield contributions from the backing material.O1054 1 76 In both the Stuttgart and Athens experiments, the O1054 1 77 absolute efficiency data were checked for uncertaintiesO1054 1 78 due to coincident summing. O1054 1 79 STATUS (TABLE) Tbl. I from Phys.Rev.,C67(2003)015801 O1054 1 80 ERR-ANALYS (ERR-T) The total errors includes: O1054 1 81 (ERR-1) uncertainty in the solid angle corrections O1054 1 82 (ERR-2) uncertainty due to charge O1054 1 83 (ERR-3) uncertainty due to target thickness O1054 1 84 (ERR-4) uncertainty due to efficiency measurements O1054 1 85 (ERR-S,1.,5.) 1% at beam energies E(p) more or O1054 1 86 equal 2.5-MeV and approx. 2% for E(p) ranging from O1054 1 87 approx. 2 to 2.5-MeV. At energies below 2-MeV, the O1054 1 88 statistical errors can vary from 2% to 5%. O1054 1 89 HISTORY (20030331C) O1054 1 90 (20030409U) Last checking has been done. O1054 1 91 (20191208A) SD: ERR-ANALYS updated. Ref. NP/A,688,421 O1054 1 92 added. O1054 1 93 (20221225A) SD: Correction in Subent 002. Subent 003 O1054 1 94 added. O1054 1 95 ENDBIB 93 0 O1054 1 96 COMMON 4 3 O1054 1 97 ERR-1 ERR-2 ERR-3 ERR-4 O1054 1 98 PER-CENT PER-CENT PER-CENT PER-CENT O1054 1 99 4. 5. 4. 3. O1054 1 100 ENDCOMMON 3 0 O1054 1 101 ENDSUBENT 100 0 O1054 199999 SUBENT O1054002 20221225 O092O1054 2 1 BIB 3 4 O1054 2 2 REACTION 1(38-SR-88(P,G)39-Y-89,,SIG) O1054 2 3 2(38-SR-88(P,G)39-Y-89,,SIG,,SFC) O1054 2 4 STATUS (SPSDD,O1054003) Screening corrected data O1054 2 5 HISTORY (20221225A) SD: Data were superseded. O1054 2 6 ENDBIB 4 0 O1054 2 7 NOCOMMON 0 0 O1054 2 8 DATA 5 33 O1054 2 9 EN-CM DATA 1ERR-T 1DATA 2ERR-T 2 O1054 2 10 MEV MICRO-B MICRO-B B*MEV B*MEV O1054 2 11 1.379 0.66 0.13 528.E+5 104.E+5 O1054 2 12 1.479 0.91 0.14 262.E+5 40.E+5 O1054 2 13 1.58 2.2 0.3 251.E+5 34.E+5 O1054 2 14 1.68 3.2 0.4 159.E+5 20.E+5 O1054 2 15 1.78 8.3 0.9 192.E+5 21.E+5 O1054 2 16 1.88 15.6 1.7 180.E+5 21.E+5 O1054 2 17 1.982 16.7 1.8 100.E+5 11.E+5 O1054 2 18 2.08 48. 5. 161.E+5 17.E+5 O1054 2 19 2.18 60. 6. 116.E+5 12.E+5 O1054 2 20 2.28 136. 13. 157.E+5 15.E+5 O1054 2 21 2.38 158. 15. 113.E+5 11.E+5 O1054 2 22 2.48 168. 16. 76.E+5 7.E+5 O1054 2 23 2.561 206. 19. 66.E+5 6.E+5 O1054 2 24 2.581 198. 18. 59.E+5 5.E+5 O1054 2 25 2.68 365. 33. 73.E+5 7.E+5 O1054 2 26 2.78 413. 38. 57.E+5 5.E+5 O1054 2 27 2.88 527. 51. 51.E+5 5.E+5 O1054 2 28 2.957 613. 56. 45.E+5 4.E+5 O1054 2 29 2.98 667. 61. 46.E+5 4.E+5 O1054 2 30 3.081 1020. 91. 51.E+5 5.E+5 O1054 2 31 3.18 1030. 93. 38.E+5 3.E+5 O1054 2 32 3.281 1280. 117. 35.E+5 3.E+5 O1054 2 33 3.354 1320. 124. 30.E+5 3.E+5 O1054 2 34 3.38 1440. 132. 31.E+5 3.E+5 O1054 2 35 3.478 2080. 187. 34.E+5 3.E+5 O1054 2 36 3.552 1770. 168. 24.E+5 2.E+5 O1054 2 37 3.75 2180. 198. 18.E+5 2.E+5 O1054 2 38 3.948 2930. 231. 16.E+5 1.E+5 O1054 2 39 4.146 3630. 298. 13.E+5 1.E+5 O1054 2 40 4.344 4660. 382. 12.E+5 1.E+5 O1054 2 41 4.541 4210. 333. 7.3E+5 0.6E+5 O1054 2 42 4.739 4310. 336. 5.4E+5 0.5E+5 O1054 2 43 4.937 2690. 222. 2.5E+5 0.2E+5 O1054 2 44 ENDDATA 35 0 O1054 2 45 ENDSUBENT 44 0 O1054 299999 SUBENT O1054003 20221225 O092O1054 3 1 BIB 3 4 O1054 3 2 REACTION 1(38-SR-88(P,G)39-Y-89,,SIG) O1054 3 3 2(38-SR-88(P,G)39-Y-89,,SIG,,SFC) O1054 3 4 STATUS (TABLE) Tbl.II from Phys.Rev.,C104(2021)025804 O1054 3 5 HISTORY (20221225C) SD O1054 3 6 ENDBIB 4 0 O1054 3 7 NOCOMMON 0 0 O1054 3 8 DATA 5 33 O1054 3 9 EN-CM DATA 1ERR-T 1DATA 2ERR-T 2 O1054 3 10 MEV MICRO-B MICRO-B B*MEV B*MEV O1054 3 11 1.379 0.55 0.10 5.7658E+07 1.0483E+07 O1054 3 12 1.479 0.8 0.1 2.9958E+07 3.745E+06 O1054 3 13 1.580 2.0 0.3 2.9354E+07 4.403E+06 O1054 3 14 1.680 2.9 0.4 1.8358E+07 2.532E+06 O1054 3 15 1.780 7.6 0.8 2.2334E+07 2.351E+06 O1054 3 16 1.880 14.4 1.6 2.0935E+07 2.326E+06 O1054 3 17 1.982 15.5 1.7 1.1637E+07 1.276E+06 O1054 3 18 2.080 45. 5. 1.8777E+07 2.086E+06 O1054 3 19 2.180 56. 6. 1.3389E+07 1.434E+06 O1054 3 20 2.280 128. 12. 1.8214E+07 1.708E+06 O1054 3 21 2.380 149. 14. 1.3056E+07 1.227E+06 O1054 3 22 2.480 159. 15. 8.845E+06 8.34E+05 O1054 3 23 2.561 196. 18. 7.7E+06 7.07E+05 O1054 3 24 2.581 188. 17. 6.796E+06 6.14E+05 O1054 3 25 2.680 348. 31. 8.449E+06 7.53E+05 O1054 3 26 2.780 394. 36. 6.545E+06 5.98E+05 O1054 3 27 2.880 504. 49. 5.848E+06 5.69E+05 O1054 3 28 2.957 588. 54. 5.242E+06 4.81E+05 O1054 3 29 2.980 640. 68. 5.285E+06 5.62E+05 O1054 3 30 3.081 980. 87. 5.841E+06 5.19E+05 O1054 3 31 3.180 992. 90. 4.363E+06 3.96E+05 O1054 3 32 3.281 1235. 113. 4.043E+06 3.7E+05 O1054 3 33 3.354 1275. 120. 3.402E+06 3.2E+05 O1054 3 34 3.380 1391. 128. 3.456E+06 3.18E+05 O1054 3 35 3.478 2013. 181. 3.852E+06 3.46E+05 O1054 3 36 3.552 1714. 163. 2.713E+06 2.58E+05 O1054 3 37 3.750 2117. 192. 2.076E+06 1.88E+05 O1054 3 38 3.948 2851. 225. 1.799E+06 1.42E+05 O1054 3 39 4.146 3539. 291. 1.486E+06 1.22E+05 O1054 3 40 4.344 4551. 373. 1.309E+06 1.07E+05 O1054 3 41 4.541 4118. 326. 8.34E+05 6.6E+04 O1054 3 42 4.739 4222. 329. 6.15E+05 4.8E+04 O1054 3 43 4.937 2638. 218. 2.82E+05 2.3E+04 O1054 3 44 ENDDATA 35 0 O1054 3 45 ENDSUBENT 44 0 O1054 399999 ENDENTRY 3 0 O105499999999