ENTRY C2779 20221111 C225C2779000 1 SUBENT C2779001 20221111 C225C2779001 1 BIB 10 26 C2779001 2 TITLE Total cross-section measurements for 14N(alpha,g)18F C2779001 3 AUTHOR (R.G.Couch,H.Spinka,T.A.Tombrello,T.A.Weaver) C2779001 4 INSTITUTE (1USACAL) C2779001 5 REFERENCE (J,NP/A,175,300,1971) C2779001 6 #doi:10.1016/0375-9474(71)90284-3 C2779001 7 DETECTOR (NAICR) The detection system consisted of two 7.5 cm C2779001 8 diameter by 7.5 cm thick NaI crystals mounted C2779001 9 face-to-face with the target centered between them. C2779001 10 The decay of 18F was detected by counting 511 keV C2779001 11 annihilation gamma-rays in coincidence. The C2779001 12 separation between the detector faces was 5.7 cm. C2779001 13 Except for the solid angle subtended by the crystals, C2779001 14 the volume between the two faces was filled in with C2779001 15 lead. The efficiency of the system was measured C2779001 16 using a calibrated 22Na source and found to be C2779001 17 (3.13+/-0.15)%. C2779001 18 SAMPLE Thick disks, 1.25 cm in diameter and 0.4 cm thick, of C2779001 19 sintered TiN were used as targets. The targets were C2779001 20 air-cooled. C2779001 21 METHOD (ACTIV) C2779001 22 CORRECTION Corrected for the 3% electron-capture branch of the C2779001 23 18F decay, for the detection efficiency, for the 18F C2779001 24 decay during bombardment and during transfer to the C2779001 25 detection assembly and for background. C2779001 26 ERR-ANALYS (DATA-ERR) No information on source of uncertainty. C2779001 27 HISTORY (20221111C) OG C2779001 28 ENDBIB 26 0 C2779001 29 NOCOMMON 0 0 C2779001 30 ENDSUBENT 29 0 C277900199999 SUBENT C2779002 20221111 C225C2779002 1 BIB 3 5 C2779002 2 REACTION (7-N-14(A,G),,WID/STR,,RG) C2779002 3 COMMENT The authors suppose that for EN-RES=1.140 MeV spin may C2779002 4 be also equal 2,3,4 with parity +. C2779002 5 STATUS (TABLE,,R.G.Couch+,J,NP/A,175,300,1971) C2779002 6 Tab.1 (p.306) in J,NP/A,175,300,1971. C2779002 7 ENDBIB 5 0 C2779002 8 NOCOMMON 0 0 C2779002 9 DATA 6 4 C2779002 10 EN-RES DATA DATA-ERR DATA-MAX SPIN J PARITY C2779002 11 MEV EV EV EV NO-DIM NO-DIM C2779002 12 0.310 2.E-05 4. +1.C2779002 13 0.559 2.79E-04 10.5E-04 1. C2779002 14 0.698 0.5E-04 2. +1.C2779002 15 1.140 0.108 0.015 1. -1.C2779002 16 ENDDATA 6 0 C2779002 17 ENDSUBENT 16 0 C277900299999 ENDENTRY 2 0 C277999999999