ENTRY R+95 0 R+95 0 1 SUBENT R+95 1 0 R+95 1 1 BIB 12 76 R+95 1 2 INSTITUTES (USANOT) R+95 1 3 (USAPTN) R+95 1 4 (USAYAL) R+95 1 5 REFERENCE (J,PR/C,52,3,1681,1995) R+95 1 6 AUTHORS (J.G.ROSS,J.GOERRES,C.ILIADIS,S.VOUZOUKAS,M.WIESCHER, R+95 1 7 R.P.VOGELAAR,S.UTKU,N.P.T.BATEMAN,P.D.PARKER) R+95 1 8 TITLE INDIRECT STUDY OF LOW-ENERGY RESONANCES IN R+95 1 9 31P(P,ALPHA)28SI AND 35CL(P,ALPHA)32S R+95 1 10 FACILITIES (CYCC) AVF CYCLOTRON, PRINCETON UNIVERSITY, PRINCETON, R+95 1 11 NEW JERSEY. R+95 1 12 SNICS ION SOURCE, NOTRE DAME UNIVERSITY, NOTRE DAME, R+95 1 13 INDIANA. R+95 1 14 INC-PART (3HE) HELIUM-3 PARTICLES R+95 1 15 TARGETS PHOSPHORUS TARGETS WERE PREPARED BY VACUUM EVAPORATION R+95 1 16 OF A 30 - 50 MICROGRAM/CM**2 CO2P LAYER ONTO A 40 R+95 1 17 MICROGRAM/CM**2 CARBON FOIL. A PURE CO TARGET WAS ALSO R+95 1 18 MADE. ISOTOPICALLY PURE 35CL TARGETS WERE PREPARED BY R+95 1 19 60-KEV IMPLANTATION USING THE NOTRE DAME SNICS ION R+95 1 20 IMPLANTATION FACILITY. THE 35CL IONS WERE INTRODUCED R+95 1 21 INTO 40 MICROGRAM/CM**2 CARBON FOILS. THE RESULTING R+95 1 22 THICKNESS OF THE 35CL TARGET WAS 6 MICROGRAM/CM**2. R+95 1 23 METHOD BEAMS OF HELIUM-3 PARTICLES WERE PROVIDED AT 25 MEV R+95 1 24 ENERGY BY THE PRINCETON AVF CYCLOTRON. THE AVERAGE R+95 1 25 BEAM INTENSITY WAS 50 NANOAMP. THE REACTION DEUTERONS R+95 1 26 FROM THE 31P(3HE,D)32S REACTION WERE DETECTED AT R+95 1 27 ZERO DEGREE LABORATORY ANGLE IN THE FOCAL PLANE OF R+95 1 28 THE PRINCETON QDDD MAGNETIC SPECTROMETER. DETAILS ARE R+95 1 29 GIVEN IN A REFERENCE LISTED IN THE ORIGINAL PAPER. THE R+95 1 30 TYPICAL ENERGY RESOLUTION WAS ABOUT 20 KEV WHICH WAS R+95 1 31 SUFFICIENT TO RESOLVE MOST OF THE LEVELS OF INTEREST. R+95 1 32 THE ENERGY CALIBRATION OF THE DEUTERON SPECTROMETER R+95 1 33 WAS PERFORMED USING WELL-KNOWN STRONGLY POPULATED R+95 1 34 LEVELS OF 32S. PROTONS AND ALPHA PARTICLES FROM THE R+95 1 35 DECAY OF THE POPULATED STATES WERE COLLECTED IN R+95 1 36 COINCIDENCE WITH THE CORRESPONDING DEUTERON GROUPS R+95 1 37 USING THREE SILICON SURFACE BARRIER DETECTORS LOCATED R+95 1 38 AT 90, 110, AND 145 DEGREE LABORATORY ANGLES RELATIVE R+95 1 39 TO THE INCIDENT BEAM DIRECTION. THE DETECTORS WERE R+95 1 40 PLACED AT 9.5 CM DISTANCE FROM THE TARGET. THESE R+95 1 41 DETECTORS WERE ENERGY CALIBRATED WITH A 241AM R+95 1 42 ALPHA-PARTICLE SOURCE (E-ALPHA = 5.48 MEV). THEIR R+95 1 43 ENERGY RESOLUTION WAS DETERMINED TO BE ABOUT 100 R+95 1 44 KEV. THE DETECTOR SOLID ANGLES WERE CALCULATED FROM R+95 1 45 GEOMETRIC CONSIDERATIONS AND WERE EXPERIMENTALLY R+95 1 46 CONFIRMED USING THE STRONG 19F(3HE,D-ALPHA) REACTION R+95 1 47 TO THE 0+ STATE AT 6.725 MEV IN 20NE WHICH DECAYS R+95 1 48 100 PERCENT INTO THE ISOTROPIC 16O(G.S.)+ALPHA R+95 1 49 CHANNEL. THE USE OF THREE DETECTORS ALLOWED A DIRECT R+95 1 50 MEASUREMENT OF ANGULAR DISTRIBUTIONS WHICH, IN TURN, R+95 1 51 WERE FITTED WITH EVEN-ORDER LEGENDRE-POLYNOMIAL R+95 1 52 EXPANSIONS UP TO ORDER P4. THE GAMMA-RAY DECAY OF R+95 1 53 POPULATED STATES WAS MEASURED USING A NAI DETECTOR R+95 1 54 PLACED IN CLOSE PROXIMITY (5.4 CM) TO THE TARGET AT R+95 1 55 AROUND 90 DEGREES RELATIVE TO THE BEAM DIRECTION. R+95 1 56 A 3-MM THIN LEAD PLATE WAS POSITIONED BETWEEN THIS R+95 1 57 DETECTOR AND THE TARGET TO REDUCE THE COUNT RATE FROM R+95 1 58 LOW-ENERGY GAMMA RAYS. THE GAMMA-RAYS WERE MEASURED R+95 1 59 IN COINCIDENCE WITH THE VARIOUS DEUTERON GROUPS. THE R+95 1 60 NAI DETECTOR EFFICIENCY WAS CALCULATED FROM KNOWLEDGE R+95 1 61 OF THE GEOMETRY AND KNOWN PHOTON CROSS SECTIONS. THE R+95 1 62 CALCULATED EFFICIENCY WAS CHECKED BY A COMPARISON WITH R+95 1 63 MEASURED GAMMA-RAY YIELDS OBTAINED FROM A CALIBRATED R+95 1 64 137CS RADIOACTIVE GAMMA-RAY SOURCE AND FROM THE R+95 1 65 GAMMA-RAY DECAY OF A THE WELL-KNOWN STATE AT 9.059 R+95 1 66 MEV EXCITATION IN 32S. ATTENUATION COEFFICIENTS FOR R+95 1 67 LEAD AND ALUMINUM WERE TAKEN FROM STANDARD TABLES. R+95 1 68 DETECTORS (SOLST) 450-MM*2 SILICON SURFACE BARRIER DETECTORS. R+95 1 69 (SCINT) 12.7-CM X 10.2-CM NAI DETECTOR. R+95 1 70 MONITOR (CI) CURRENT INTEGRATOR. R+95 1 71 CORRECTION DATA WERE CORRECTED FOR GAMMA-RAY ATTENUATION DUE R+95 1 72 TO LEAD AND ALUMINUM PLACED BETWEEN THE TARGET AND R+95 1 73 THE NAI DETECTOR. CORRECTIONS WERE APPLIED FOR THE R+95 1 74 GAMMA-RAY DETECTOR EFFICIENCY. R+95 1 75 ERR-ANALYS ERRORS ARE GIVEN BUT FEW DETAILS ARE PROVIDED IN THE R+95 1 76 ORIGINAL PAPER CONCERNING THE METHOD FOR ESTIMATING R+95 1 77 THESE ERRORS. R+95 1 78 ENDBIB 76 R+95 1 79 ENDSUBENT 1 R+95 199999 SUBENT R+95 2 0 R+95 2 1 BIB 2 11 R+95 2 2 REACTION 31P(3HE,D-GAMMA)32S R+95 2 3 COMMENTS RELATIVE GAMMA-RAY WIDTHS OF PROTON UNBOUND STATES IN R+95 2 4 32S ARE GIVEN. DATA TAKEN FROM TABLE I OF THE ORIGINAL R+95 2 5 PAPER. EX = EXCITATION ENERGY OF RESONANT STATE IN R+95 2 6 32S. EP-CM = EQUIVALENT PROTON CM ENERGY OF RESONANCE. R+95 2 7 J-PI = SPIN/PARITY OF RESONANCE. A NEGATIVE VALUE R+95 2 8 SIGNIFIES NEGATIVE PARITY. OTHERWISE PARITY IS R+95 2 9 POSITIVE. T = ISOBARIC SPIN. RATIO = GAM(G)/GAM(T), R+95 2 10 WHERE GAM(G) = GAMMA-RAY WIDTH AND GAM(T) = TOTAL R+95 2 11 WIDTH. RATIO-ERR = ERROR IN RATIO. A BLANK SPACE R+95 2 12 INDICATES THAT THE VALUE IS NOT AVAILABLE. R+95 2 13 ENDBIB 11 R+95 2 14 DATA 6 8 R+95 2 15 EX EP-CM J-PI T RATIO RATIO-ERR R+95 2 16 MEV MEV NO-DIM NO-DIM NO-DIM NO-DIM R+95 2 17 9.023 0.159 -3. 0. 0.75 0.19 R+95 2 18 9.059 0.194 1.0 0.2 R+95 2 19 9.170 0.305 3. 1. 1.0 0.3 R+95 2 20 9.208 0.344 1. 1. 1.2 0.3 R+95 2 21 9.236 0.371 -1. 0. 0.15 R+95 2 22 9.255 0.390 2. 1. 0.84 0.22 R+95 2 23 9.290 0.425 1. 1.03 0.26 R+95 2 24 9.389 0.524 -2. 0.05 R+95 2 25 ENDDATA 10 R+95 2 26 ENDSUBENT 2 R+95 299999 SUBENT R+95 3 0 R+95 3 1 BIB 2 14 R+95 3 2 REACTION 31P(P,GAMMA)32S R+95 3 3 COMMENTS RESONANCE ENERGIES AND RESONANCE STRENGTHS ARE GIVEN R+95 3 4 FOR THE 31P(P,GAMMA)32S REACTION. EX = EXCITATION R+95 3 5 ENERGY IN 32S. EP-CM = PROTON ENERGY IN CM FOR THE R+95 3 6 RESONANCE. J-PI = SPIN/PARITY OF THE RESONANCE. A R+95 3 7 NEGATIVE VALUE IMPLIES NEGATIVE PARITY. OTHERWISE THE R+95 3 8 PARITY IS POSITIVE. GAM(P)-EF = EFFECTIVE PROTON R+95 3 9 WIDTH = (2J+1)*GAM(P), WHERE J = RESONANCE SPIN AND R+95 3 10 GAM(P) = PROTON WIDTH. S = RESONANCE STRENGTH = R+95 3 11 (2J+1)*GAM(P)*GAM(G)/GAM(T), WHERE GAM(G) = GAMMA-RAY R+95 3 12 WIDTH AND GAM(T) = TOTAL WIDTH. S-ERR = ERROR IN S. R+95 3 13 DATA OBTAINED FROM TABLE III OF THE ORIGINAL PAPER. R+95 3 14 A BLANK SPACE INDICATES THAT THE VALUE IS NOT R+95 3 15 AVAILABLE IN THE ORIGINAL PAPER. R+95 3 16 ENDBIB 14 R+95 3 17 DATA 6 11 R+95 3 18 EX EP-CM J-PI GAM(P)-EFF S S-ERR R+95 3 19 MEV MEV NO-DIM NO-DIM EV EV R+95 3 20 9.023 0.159 -3. 9.1000E-11 5.6000E-11 3.2000E-11 R+95 3 21 9.059 0.194 4.9000E-06 1.9200E-06 6.4000E-07 R+95 3 22 9.065 0.201 4. 1.3200E-08 R+95 3 23 9.170 0.305 3. 1.4800E-04 R+95 3 24 9.196 0.331 2. 2.4400E-04 R+95 3 25 9.208 0.344 1. 0.024 0.0168 0.0028 R+95 3 26 9.236 0.371 -1. 0.02 2.4000E-04 4.8000E-05 R+95 3 27 9.255 0.390 2. 0.0026 0.0018 2.8000E-04 R+95 3 28 9.290 0.425 1. 0.28 0.100 0.016 R+95 3 29 9.389 0.524 -2. 7.75 0.48 0.08 R+95 3 30 9.464 0.600 2. 0.0044 0.0008 R+95 3 31 ENDDATA 13 R+95 3 32 ENDSUBENT 3 R+95 399999 ENDENTRY 3 R+959999999