ENTRY E1814 20050224 0000E181400000001 SUBENT E1814001 20050224 0000E181400100001 BIB 15 57 E181400100002 TITLE Search for 21B E181400100003 AUTHOR (A.Ozawa, Y.Yamaguchi, M.Chiba, R.Kanungo, K.Kimura, E181400100004 S.Momota, T.Suda, T.Suzuki, I.Tanihata, T.Zheng, E181400100005 S.Watanabe, T.Yamaguchi, K.Yoshida) E181400100006 INSTITUTE (2JPNIPC) E181400100007 (2JPNNII) Department of Physics E181400100008 (2JPNTOH) Department of Physics E181400100009 (2JPNNIA) E181400100010 (2JPNJPN) Kochi University of Technology, Tosayamada, E181400100011 Kochi E181400100012 (2JPNSUT) Department of Physics E181400100013 (3CPRBJG) Department of Technical Physics E181400100014 (2GERGSI) E181400100015 REFERENCE (J,PR/C,67,(1),014610,200301) E181400100016 INC-SOURCE Beam intensity is 40 particle-nA. E181400100017 SAMPLE - Target enrichment: Mass number of target is not E181400100018 given in reference but obtained by private E181400100019 communication. E181400100020 - Chemical-form of target is element. E181400100021 - Physical-form of target is solid. E181400100022 - Backing is unknown. E181400100023 METHOD (OLMS) Brho-delta-E-TOF method (where Brho is magnetic E181400100024 rigidity and delta-E is energy loss) E181400100025 (TOF) Brho-delta-E-TOF method (where Brho is magnetic E181400100026 rigidity and delta-E is energy loss) E181400100027 FACILITY (CYCLO,2JPNIPC) AVF and RIKEN Ring Cyclotron E181400100028 ANALYSIS The transmission losses were estimated were estimated E181400100029 by Monte Carlo type calculation using code MOCADI [A. E181400100030 S. Goldhaber, Phys. Lett. 53B,306(1974)]. According to E181400100031 authors simulations, the transmission from the target E181400100032 to F2 were typically 3-10 %. E181400100033 DETECTOR - Solid angle of detector is 5 msr. E181400100034 - Efficiency: The RIPS setting was optimized for seven E181400100035 nuclei (25F, 24O, 23N, 22C, 19B, 17B and 15B). E181400100036 (MAGSP) E181400100037 (SCIN) Plastic scintillator to determine TOF and E181400100038 delta-E E181400100039 (SI) To provide delta-E E181400100040 (PPAC) To determine magnetic rigidity (Brho) values. E181400100041 Efficiencies of the PPAC at F1 for B isotope E181400100042 were more than 90 % and close to 100 % for B E181400100043 isotopes for PPAC at F2. E181400100044 ERR-ANALYS (DATA-ERR) Uncertainties in (a) primary-beam intensity E181400100045 monitor, (b) transmission calculations, and E181400100046 (c) statistical errors E181400100047 ADD-RES (COMP) EPAX2 (Empirical PArametrization of E181400100048 fragmentation Cross Section)[K.Suemmerer and E181400100049 B.Blank, Phys. Rev. C61, 034607(2000)] is used E181400100050 to compared with observed production cross E181400100051 section in Fig. 3 and 4 in reference. E181400100052 COMMENT 21B is not observed in any events for 150 hour of E181400100053 measurements. That allows us to put an upper limit of E181400100054 21B production cross section, 6.7e-14 b, where one E181400100055 event for 21B is assumed. E181400100056 STATUS (TABLE) Data taken from Table 1, p014610-2 in E181400100057 reference E181400100058 HISTORY (20030726C) E181400100059 ENDBIB 57 0 E181400100060 COMMON 1 3 E181400100061 EN-MEAN E181400100062 MEV/A E181400100063 94. E181400100064 ENDCOMMON 3 0 E181400100065 ENDSUBENT 64 0 E181400199999 SUBENT E1814002 20050224 0000E181400200001 BIB 2 3 E181400200002 REACTION (4-BE-9(18-AR-40,X)ELEM/MASS,,SIG) E181400200003 Production cross section E181400200004 SAMPLE Target-thickness is 471 mg/cm**2. E181400200005 ENDBIB 3 0 E181400200006 NOCOMMON 0 0 E181400200007 DATA 4 13 E181400200008 ELEMENT MASS DATA DATA-ERR E181400200009 NO-DIM NO-DIM B B E181400200010 5. 15. 7.000E-06 2.700E-06 E181400200011 5. 17. 2.910E-08 4.500E-09 E181400200012 5. 19. 3.400E-11 1.100E-11 E181400200013 6. 17. 5.700E-06 2.200E-06 E181400200014 6. 19. 1.960E-08 5.700E-09 E181400200015 6. 20. 2.170E-09 5.000E-10 E181400200016 6. 22. 1.230E-12 9.900E-13 E181400200017 7. 22. 8.900E-09 3.500E-09 E181400200018 7. 23. 2.190E-10 9.400E-11 E181400200019 8. 23. 1.300E-07 5.100E-08 E181400200020 8. 24. 5.600E-09 2.200E-09 E181400200021 9. 25. 4.000E-07 1.500E-07 E181400200022 9. 26. 9.900E-09 3.900E-09 E181400200023 ENDDATA 15 0 E181400200024 ENDSUBENT 23 0 E181400299999 SUBENT E1814003 20050224 0000E181400300001 BIB 2 3 E181400300002 REACTION (73-TA-181(18-AR-40,X)ELEM/MASS,,SIG) E181400300003 Production cross section E181400300004 SAMPLE Target-thickness is 686 mg/cm**2. E181400300005 ENDBIB 3 0 E181400300006 NOCOMMON 0 0 E181400300007 DATA 4 13 E181400300008 ELEMENT MASS DATA DATA-ERR E181400300009 NO-DIM NO-DIM B B E181400300010 5. 15. 1.510E-04 5.000E-05 E181400300011 5. 17. 9.800E-07 2.100E-07 E181400300012 5. 19. 1.590E-09 4.800E-10 E181400300013 6. 17. 7.300E-05 2.100E-05 E181400300014 6. 19. 3.160E-07 6.900E-08 E181400300015 6. 20. 3.400E-08 1.100E-08 E181400300016 6. 22. 7.700E-11 4.900E-11 E181400300017 7. 22. 3.400E-07 1.400E-07 E181400300018 7. 23. 3.900E-09 2.100E-09 E181400300019 8. 23. 3.400E-06 1.200E-07 E181400300020 8. 24. 1.170E-07 3.300E-08 E181400300021 9. 25. 1.050E-05 3.100E-06 E181400300022 9. 26. 2.650E-07 7.700E-08 E181400300023 ENDDATA 15 0 E181400300024 ENDSUBENT 23 0 E181400399999 ENDENTRY 3 0 E181499999999