ENTRY 11025 20120516 13811102500000001 SUBENT 11025001 20120516 13811102500100001 BIB 13 35 1102500100002 INSTITUTE (1USALMS) 1102500100003 REFERENCE (J,NP,59,81,196410) 1102500100004 AUTHOR (W.L.Imhof,F.J.Vaughn,L.F.Chase Jr,H.A.Grench,M.Walt) 1102500100005 TITLE A search for H4 and Li4. 1102500100006 INC-SOURCE (P-LI7) The neutrons produced in a thick water-cooled 1102500100007 lithium target 1102500100008 FACILITY (VDG,1USALMS) 3 MeV Van de Graaff accelerator 1102500100009 SAMPLE The tritium sample, in the form of the compound 1102500100010 titanium tritide, was encased in three quartz 1102500100011 ampoules which were held by Styrofoam inside a 1102500100012 thin-walled (0.4 g/cm2) stainless steel cylinder 1102500100013 having a diameter of 3.7 cm and a length of 5 cm. 1102500100014 METHOD (ACTIV) Activation 1102500100015 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 1102500100016 Fast neutron fluxes were measured by removing the large1102500100017 plastic scintillator and observing the induced Au-198 1102500100018 activity in gold foils placed around the tritium sample1102500100019 From the known Au-197(n,gamma)Au-198 cross sections 1102500100020 and from the calculated neutron energy spectrum from a 1102500100021 lithium target thick enough to stop the proton beam, 1102500100022 the total flux of neutrons in the energy range 1102500100023 30-1200 keV was calculated. 1102500100024 MONIT-REF (,K.K.Harris+,J,BAP,7,553,1962) 1102500100025 DETECTOR (SCIN) The beta particles from H4 or Li4 decay would be1102500100026 detected, if any such decay occurred, in a large 1102500100027 cylindrical plastic scintillator, 25 cm in diam. by 1102500100028 25 cm in length, having an axial well 5 cm in diam. 1102500100029 by 15 cm in length 1102500100030 STATUS (SCSRS) 1102500100031 HISTORY (19760628T) Translated from SCISRS 1102500100032 (19820106A) converted to reaction formalism 1102500100033 (19840229A) corrected institute. 1102500100034 (20120516A) SD:Updated to new date formats,lower case. 1102500100035 corrected according to last EXFOR rules and Dict. 1102500100036 BIB update. Energy in Subent 4 corrected. 1102500100037 ENDBIB 35 0 1102500100038 NOCOMMON 0 0 1102500100039 ENDSUBENT 38 0 1102500199999 NOSUBENT 11025002 19780331 00001102500200001 NOSUBENT 11025003 19780331 00001102500300001 SUBENT 11025004 20120516 13811102500400001 BIB 4 8 1102500400002 REACTION (1-H-3(N,G)1-H-4,,SIG,,MXW) 1102500400003 INC-SPECT Fluxes of thermal neutrons produced by moderation in 1102500400004 the plastic scintillator were measured using bare and 1102500400005 cadmium-covered gold foils. 1102500400006 COMMENT Value given is for the half-life range .003-100 sec. 1102500400007 For a half-life range of 100-100,000 sec, upper limit 1102500400008 is 1 microbarn. 1102500400009 HISTORY (20120516A) SD: Energy value was corrected. 1102500400010 ENDBIB 8 0 1102500400011 NOCOMMON 0 0 1102500400012 DATA 2 1 1102500400013 EN-DUMMY DATA-MAX 1102500400014 EV B 1102500400015 0.0253 6.E-06 1102500400016 ENDDATA 3 0 1102500400017 ENDSUBENT 16 0 1102500499999 SUBENT 11025005 20120516 13811102500500001 BIB 3 5 1102500500002 REACTION (1-H-3(N,G)1-H-4,,SIG,,AV) 1102500500003 METHOD (ACTIV) Activation 1102500500004 COMMENT Value given is the half-life range .003-100 sec. 1102500500005 For a half-life range of 100-100,000 sec, upper limit 1102500500006 is 0.01 microb. 1102500500007 ENDBIB 5 0 1102500500008 NOCOMMON 0 0 1102500500009 DATA 3 1 1102500500010 EN-MIN EN-MAX DATA-MAX 1102500500011 MEV MEV B 1102500500012 3.0E-02 1.2 6.E-08 1102500500013 ENDDATA 3 0 1102500500014 ENDSUBENT 13 0 1102500599999 ENDENTRY 5 0 1102599999999