ENTRY C2315 20180611 C176C231500000001 SUBENT C2315001 20180611 C176C231500100001 BIB 11 24 C231500100002 TITLE Decay of At212; the Bi209(alpha,n)At212 Reaction C231500100003 AUTHOR (J.C.Ritter,W.G.Smith) C231500100004 REFERENCE (J,PR,128,1778,1962) C231500100005 #doi:10.1103/PhysRev.128.1778 C231500100006 INSTITUTE (1USAPUR) C231500100007 FACILITY (CYCLO,1USAPUR) Purdue cyclotron. C231500100008 SAMPLE The 1.7 mg/cm2 bismuth foil was imagined to be C231500100009 divided, parallel to the foil faces, into a series of C231500100010 thin sections of equal thicknesses. The target was C231500100011 prepared by vacuum evaporation of bismuth on one side C231500100012 of a thin (0.09 mg/cm2) gold foil. C231500100013 DETECTOR (SIBAR) Au-Si surface-barrier charged particle C231500100014 detectors. C231500100015 METHOD (ACTIV) In order to obtain the relative cross section C231500100016 as a function of the energy of the incident helium C231500100017 ions for the Bi209(n,alpha)At212 reaction, bismuth C231500100018 target on a gold backing was bombarded with an C231500100019 energy-analyzed beam. The lab energy of the C231500100020 bombarding beam was varied from 18.25 to 19.25 MeV. C231500100021 The energy of the alpha particles emitted by At212 C231500100022 was measured. C231500100023 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C231500100024 DECAY-DATA (85-AT-212,0.20SEC,A,7720.0) C231500100025 HISTORY (20180611C) BP C231500100026 ENDBIB 24 0 C231500100027 COMMON 2 3 C231500100028 EN-ERR ERR-HL C231500100029 KEV SEC C231500100030 32.0 0.04 C231500100031 ENDCOMMON 3 0 C231500100032 ENDSUBENT 31 0 C231500199999 SUBENT C2315002 20180611 C176C231500200001 BIB 3 4 C231500200002 REACTION (83-BI-209(A,N)85-AT-212,,SIG,,REL) C231500200003 CORRECTION Corrections to this curve for target thickness were C231500200004 negligible. C231500200005 STATUS (CURVE) Fig. 6, page 1781. C231500200006 ENDBIB 4 0 C231500200007 NOCOMMON 0 0 C231500200008 DATA 3 8 C231500200009 EN-CM DATA DATA-ERR C231500200010 MEV ARB-UNITS ARB-UNITS C231500200011 17.779 5.886 0.465 C231500200012 18.048 6.971 0.774 C231500200013 18.297 9.707 0.465 C231500200014 18.418 12.340 0.671 C231500200015 18.552 15.650 0.671 C231500200016 18.639 16.630 0.826 C231500200017 18.700 21.890 1.188 C231500200018 18.770 25.970 1.756 C231500200019 ENDDATA 10 0 C231500200020 ENDSUBENT 19 0 C231500299999 ENDENTRY 2 0 C231599999999