ENTRY V+73B 0 V+73B 0 1 SUBENT V+73B 1 0 V+73B 1 1 BIB 12 72 V+73B 1 2 INSTITUTE (FRPAR) V+73B 1 3 REFERENCE (J,PR/C,8,1,178,1973) V+73B 1 4 AUTHORS (J.VERNOTTE,S.GALES,M.LANGEVIN,J.M.MAISON) V+73B 1 5 TITLE INVESTIGATION OF THE LOWEST T=2 STATE OF 32S IN THE V+73B 1 6 31P+P REACTIONS V+73B 1 7 FACILITY (VDG) 4-MV VAN DE GRAAFF ACCELERATOR, INSTITUT DE V+73B 1 8 PHYSIQUE NUCLEAIRE, ORSAY, FRANCE. V+73B 1 9 INC-PART (P) PROTONS. V+73B 1 10 TARGETS RED PHOSPHORUS TARGETS WERE PREPARED BY VACUUM V+73B 1 11 EVAPORATION ONTO 0.2-MM TUNGSTEN BACKING FOR THE V+73B 1 12 GAMMA-RAY EXPERIMENT. RED PHOSPHORUS TARGETS WERE V+73B 1 13 PREPARED BY EVAPORATION ONTO 10 - 20 MICROGRAM/CM**2 V+73B 1 14 CARBON FOIL FOR THE CHARGED PARTICLE MEASUREMENTS. V+73B 1 15 THE THICKNESS OF PHOSPHORUS WAS 9.0 MICROGRAM/CM**2 V+73B 1 16 FOR THESE LATTER TARGETS. V+73B 1 17 METHOD PROTON BEAMS WERE OBTAINED FROM THE 4-MV VAN DE V+73B 1 18 GRAAFF ACCELERATOR AT INSTITUT DE PHYSIQUE NUCLEAIRE, V+73B 1 19 ORSAY. THE BEAM WAS MOMENTUM ANALYZED BY A 90-DEGREE V+73B 1 20 MAGNET WHICH WAS CALIBRATED WITH THE 13C(P,N)13N V+73B 1 21 REACTION AT THE THRESHOLD ENERGY EP = 3.2357 MEV. V+73B 1 22 FOR THE (P,GAMMA) MEASUREMENTS, THE PROTON BEAM V+73B 1 23 PASSED THROUGH A LIQUID NITROGEN TRAP WHICH SERVED V+73B 1 24 TO REDUCE CARBON BUILDUP ON THE TARGET CONSIDERABLY. V+73B 1 25 DUE TO THE IMPORTANT CONTRIBUTION OF GAMMA RAYS FROM V+73B 1 26 THE 31P(P,P'-GAMMA)31P AND 13P(P,ALPHA1-GAMMA)28SI V+73B 1 27 REACTIONS THE BEAM INTENSITY WAS KEPT TO LESS THAN V+73B 1 28 2 MICROAMP ON A 2-MM-DIA. SPOT SIZE. THE TARGET WAS V+73B 1 29 WOBBLED ELECTROMAGNETICALLY TO DISPERSE THE BEAM V+73B 1 30 HEAT ON TARGET AND NO DETERIORATION WAS OBSERVED V+73B 1 31 EVEN AFTER SEVERAL DAYS OF IRRADIATION. GAMMA RAYS V+73B 1 32 WERE DETECTED WITH THE LARGER NAI DETECTORS AS WELL V+73B 1 33 AS A GE(LI) DETECTOR. IN THE CASE OF THE CHARGED- V+73B 1 34 PARTICLE MEASUREMENTS, RUTHERFORD SCATTERING OF V+73B 1 35 PROTONS IN A RESONANCE-FREE ENERGY REGION WAS USED V+73B 1 36 TO DETERMINE TARGET ATOM CONTENT. THE PROTON BEAM V+73B 1 37 CURRENT WAS KEPT BELOW 300 NANOAMP DURING THESE V+73B 1 38 MEASUREMENTS AND NO DETERIORATION OF THE THIN TARGETS V+73B 1 39 USED WAS OBSERVED HERE EITHER. THE ENERGY RESOLUTION V+73B 1 40 FOR THE CHARGED-PARTICLE MEASUREMENTS WAS OPTIMIZED V+73B 1 41 BY ADJUSTING THE BEAM OPTICS AS WELL AS MOMENTUM V+73B 1 42 ANALYSIS. IT WAS FOUND TO BE IN THE RANGE OF V+73B 1 43 (2.5 - 3.0) X 10**(-4), AS MEASURED AT THE EP = V+73B 1 44 1.7476-MEV SHARP RESONANCE OF THE 13C(P,GAMMA)13N V+73B 1 45 REACTION. THE BEAM WAS ULTIMATELY STOPPED IN THE V+73B 1 46 GRAPHITE LINING OF A FARADAY CUP SITUATED 150 CM V+73B 1 47 DOWNSTREAM FROM THE TARGET. THE SCATTERED CHARGED V+73B 1 48 PARTICLES WERE DETECTED WITH SURFACE BARRIER V+73B 1 49 DETECTORS MOUNTED IN A 50-CM-DIA. SCATTERING CHAMBER. V+73B 1 50 GAMMA RAYS WITH ENERGIES EXCEEDING 3 MEV WERE RECORDED V+73B 1 51 AT THE SAME TIME AS THE SCATTERED CHARGED PARTICLES. V+73B 1 52 THIS DETECTOR WAS PLACED AT 45 DEGREES RELATIVE TO THE V+73B 1 53 INCIDENT PROTON BEAM AND 5 CM DISTANCE FROM THE V+73B 1 54 TARGET. GAMMA-RAY DETECTOR EFFICIENCY CURVES WERE V+73B 1 55 MEASURED USING A 56CO SOURCE FOR GAMMA RAYS WITH V+73B 1 56 ENERGIES BELOW 3.2 MEV AND WITH THE GAMMA-RAY V+73B 1 57 SPECTRA FROM THE DECAY OF THE EP = 1.555 MEV V+73B 1 58 RESONANCE IN 31P(P,GAMMA)32S REACTION FOR GAMMA V+73B 1 59 RAYS WITH ENERGIES ABOVE 3.2 MEV. V+73B 1 60 DETECTORS (SCINT) 12.7-CM X 12.7-CM NAI(TL) DETECTORS. V+73B 1 61 (GELI) 37-CM**3 GE(LI) DETECTOR WITH A RESOLUTION V+73B 1 62 OF 4 KEV FWHM FOR 1.33-MEV 60CO GAMMA RAYS AND 25 V+73B 1 63 KEV FOR 8 MEV GAMMA RAYS. V+73B 1 64 (SOLST) THREE SURFACE-BARRIER DETECTORS WERE USED. V+73B 1 65 EACH SUBTENDED A SOLID ANGLE OF 0.55 X 10**(-3) V+73B 1 66 STERADIAN. V+73B 1 67 (SCINT) 3.8-CM X 3.8-CM NAI(TL) DETECTOR. V+73B 1 68 MONITOR (CI) CURRENT INTEGRATOR. V+73B 1 69 CORRECTION THE GAMMA-RAY YIELD DATA WERE APPARENTLY CORRECTED FOR V+73B 1 70 DETECTOR EFFICIENCY. OTHER DETAILS ARE MENTIONED IN V+73B 1 71 THE ORIGINAL PAPER. V+73B 1 72 ERR-ANALYS THE GAMMA-RAY DETECTOR EFFICIENCY CONTRIBUTION WAS V+73B 1 73 10 PERCENT. V+73B 1 74 ENDBIB 72 V+73B 1 75 ENDSUBENT 1 V+73B 199999 SUBENT V+73B 2 0 V+73B 2 1 BIB 2 19 V+73B 2 2 REACTION 31P(P,GAMMA)32S V+73B 2 3 COMMENTS ELECTROMAGNETIC DECAY PROPERTIES OF 12.044-MEV V+73B 2 4 LEVEL IN 32S ARE GIVEN. DATA OBTAINED FROM TABLE I V+73B 2 5 OF THE ORIGINAL PAPER. EX = EXCITATION ENERGY OF V+73B 2 6 32S LEVEL. EX-ERR = ERROR IN EX. J-PI = SPIN/PARITY V+73B 2 7 OF THE LEVEL. A NEGATIVE VALUE INDICATES NEGATIVE V+73B 2 8 PARITY. OTHERWISE PARITY IS POSITIVE. T = ISOBARIC V+73B 2 9 SPIN OF THE RESONANT STATE. S = RESONANCE STRENGTH V+73B 2 10 = (2J+1)*GAM(P)*GAM(G)/GAM(T), WHERE J = RESONANCE V+73B 2 11 SPIN, GAM(P) = PROTON WIDTH, GAM(G) = GAMMA-RAY V+73B 2 12 WIDTH, AND GAM(T) = TOTAL WIDTH. S-ERR = ERROR IN S. V+73B 2 13 EI = INITIAL LEVEL IN 32S FOR GAMMA-RAY TRANSITION. V+73B 2 14 EF = FINAL LEVEL. TYPE = TRANSITION MULTIPOLARITY V+73B 2 15 (M1 OR M2). J-PI(F) = SPIN/PARITY OF FINAL STATE. V+73B 2 16 TF = ISOBARIC SPIN OF FINAL STATE. TRANS = RADIATION V+73B 2 17 TRANSITON STRENGTH. B = BRANCHING RATIO. B-ERR = V+73B 2 18 ERROR IN B. TRANS-ERR = ERROR IN TRANS. W.U. = V+73B 2 19 WEISSKOPF UNITS. PCT = PERCENT. A BLANK ENTRY V+73B 2 20 INDICATES THAT NO VALUE IS GIVEN IN THE TABLE. V+73B 2 21 ENDBIB 19 V+73B 2 22 DATA 14 2 V+73B 2 23 EX EX-ERR J-PI T S S-ERR V+73B 2 24 EF J-PI(F) TF TYPE B B-ERR V+73B 2 25 TRANS TRANS-ERR V+73B 2 26 MEV MEV NO-DIM NO-DIM EV EV V+73B 2 27 MEV NO-DIM NO-DIM NO-DIM PCT PCT V+73B 2 28 W.U. W.U. V+73B 2 29 12.044 0.004 -4. 1. 7.0 1.4 V+73B 2 30 5.006 -3. 0. M1 99. V+73B 2 31 0.13 0.03 V+73B 2 32 12.044 0.004 -4. 1. 7.0 1.4 V+73B 2 33 2.232 2. 0. M2 1. V+73B 2 34 0.7 V+73B 2 35 ENDDATA 12 V+73B 2 36 ENDSUBENT 2 V+73B 299999 SUBENT V+73B 3 0 V+73B 3 1 BIB 2 21 V+73B 3 2 REACTION 31P(P,GAMMA)32S V+73B 3 3 COMMENTS ELECTROMAGNETIC DECAY PROPERTIES OF 12.050-MEV V+73B 3 4 LEVEL IN 32S ARE GIVEN. DATA OBTAINED FROM TABLE II V+73B 3 5 OF THE ORIGINAL PAPER. EX = EXCITATION ENERGY OF V+73B 3 6 32S LEVEL. EX-ERR = ERROR IN EX. J-PI = SPIN/PARITY V+73B 3 7 OF THE LEVEL. A NEGATIVE VALUE INDICATES NEGATIVE V+73B 3 8 PARITY. OTHERWISE PARITY IS POSITIVE. T = ISOBARIC V+73B 3 9 SPIN OF THE RESONANT STATE. S = RESONANCE STRENGTH V+73B 3 10 = (2J+1)*GAM(P)*GAM(G)/GAM(T), WHERE J = RESONANCE V+73B 3 11 SPIN, GAM(P) = PROTON WIDTH, GAM(G) = GAMMA-RAY V+73B 3 12 WIDTH, AND GAM(T) = TOTAL WIDTH. S-ERR = ERROR IN S. V+73B 3 13 EI = INITIAL LEVEL IN 32S FOR GAMMA-RAY TRANSITION. V+73B 3 14 EF = FINAL LEVEL. TYPE = TRANSITION MULTIPOLARITY V+73B 3 15 (M1 OR E2). J-PI(F) = SPIN/PARITY OF FINAL STATE. V+73B 3 16 TF = ISOBARIC SPIN OF FINAL STATE. TRANS = RADIATION V+73B 3 17 TRANSITON STRENGTH. B = BRANCHING RATIO. B-ERR = V+73B 3 18 ERROR IN B. TRANS-ERR = ERROR IN TRANS. W.U. = V+73B 3 19 WEISSKOPF UNITS. PCT = PERCENT. A BLANK ENTRY V+73B 3 20 INDICATES THAT NO VALUE IS GIVEN IN THE TABLE. V+73B 3 21 TRANSITION STRENGTH CALCULATED WITH PROTON WIDTH V+73B 3 22 EQUAL TO 75 PERCENT OF TOTAL WIDTH. V+73B 3 23 ENDBIB 21 V+73B 3 24 DATA 14 5 V+73B 3 25 EX EX-ERR J-PI T S S-ERR V+73B 3 26 EF J-PI(F) TF TYPE B B-ERR V+73B 3 27 TRANS TRANS-ERR V+73B 3 28 MEV MEV NO-DIM NO-DIM EV EV V+73B 3 29 MEV NO-DIM NO-DIM NO-DIM PCT PCT V+73B 3 30 W.U. W.U. V+73B 3 31 12.050 0.004 0. 2. 2.4 0.5 V+73B 3 32 7.001 1. 1. M1 6. 1. V+73B 3 33 0.07 0.02 V+73B 3 34 12.050 0.004 0. 2. 2.4 0.5 V+73B 3 35 8.126 1. 1. M1 83. 8. V+73B 3 36 2.1 0.6 V+73B 3 37 12.050 0.004 0. 2. 2.4 0.5 V+73B 3 38 9.207 1. 1. M1 11. 2. V+73B 3 39 0.73 0.02 V+73B 3 40 12.050 0.004 0. 2. 2.4 0.5 V+73B 3 41 9.07 1. 1. V+73B 3 42 V+73B 3 43 12.050 0.004 0. 2. 2.4 0.5 V+73B 3 44 2.231 2. 0. E2 0.8 V+73B 3 45 0.06 V+73B 3 46 ENDDATA 21 V+73B 3 47 ENDSUBENT 3 V+73B 399999 ENDENTRY 3 V+73B9999999