ENTRY RK71 0 RK71 0 1 SUBENT RK71 1 0 RK71 1 1 BIB 12 39 RK71 1 2 INSTITUTE (SAF, UNIVERSITY OF THE WITWATERSRAND, JOHANNESBURG) RK71 1 3 REFERENCE (J,NC/A,3,2,347,1971) RK71 1 4 AUTHORS (M.J.RENAN,R.J.KEDDY) RK71 1 5 TITLE LIFETIMES OF LOW-LYING EXCITED STATES IN 32S RK71 1 6 FACILITY (C-W) COCKCROFT-WALTON ACCELERATOR, UNIVERSITY OF THE RK71 1 7 WITWATERSRAND, JOHANNESBURG, SOUTH AFRICA. RK71 1 8 INC-PART (P) PROTONS. RK71 1 9 TARGETS RED PHOSPHORUS POWDER (100 PERCENT PHOSPHORUS) WAS RK71 1 10 COMPRESSED TO A DENSITY OF 2.2 G/CM**2. EVAPORATED RK71 1 11 ZINC PHOSPHIDE TARGETS WERE FOUND, DUE TO ENERGY RK71 1 12 LIMITATIONS OF THE ACCELERATOR, TO PRODUCE RK71 1 13 ATTENUATED ENERGY SHIFTS TOO SMALL TO BE ACCURATELY RK71 1 14 MEASURED. RK71 1 15 METHOD THE DOPPLER-SHIFT-ATTENUATION METHOD (DSAM) WAS USED RK71 1 16 IN THIS EXPERIMENT. THREE RESONANCES WERE INVESTIGATED RK71 1 17 AT EP = 459, 541, AND 642 KEV. ALTERNATE SPECTRA WERE RK71 1 18 TAKEN AT 0 DEGREE AND 135 DEGREES. THE GAIN AND ZERO RK71 1 19 LEVELS OF THE SPECTRUM RECORDING APPARATUS WAS RK71 1 20 STABILIZED. STANDARD RADIOACTIVE SOURCES WERE PRESENT RK71 1 21 DURING ALL OF THE MEASUREMENTS TO MONITOR GAIN RK71 1 22 SHIFTS. THESE MEASUREMENTS YIELDED THE RATIO OF THE RK71 1 23 ATTENUATED DOPPLER SHIFT TO THE MAXIMUM SHIFT FOR RK71 1 24 RECOILING IONS THAT HAVE NOT BEEN SLOWED DOWN. THE RK71 1 25 EXPERIMENTAL VALUES ARE THEN COMPARED WITH VALUES RK71 1 26 DEDUCED FROM THE THEORY OF THE SLOWING DOWN OF IONS. RK71 1 27 COMPUTER ANALYSIS WAS USED TO DETERMINE THE CENTROIDS RK71 1 28 OF THE GAMMA-RAY FULL-ENERGY PEAKS. RK71 1 29 DETECTOR (GELI) 40-CM**3 GE(LI) DETECTOR WITH A RESOLUTION OF RK71 1 30 2.8 KEV FWHM AT 1.33 MEV. RK71 1 31 MONITOR (CI) CURRENT INTEGRATOR. RK71 1 32 CORRECTION INSTRUMENTAL GAIN AND ZERO-POINT SHIFTS. RK71 1 33 ERR-ANALYS THE QUOTED ERRORS INCLUDE THOSE IN THE DETERMINATION RK71 1 34 OF THE CENTROIDS OF THE PEAKS BUT DO NOT INCLUDE ANY RK71 1 35 UNCERTAINTIES IN THE SLOWING-DOWN THEORY. THE ERROR RK71 1 36 IN THE THEORETICAL STOPPING POWER WAS ASSUMED TO BE RK71 1 37 15 PERCENT AND IN THE ELECTRONIC STOPPING POWER 20 RK71 1 38 PERCENT. THESE ERRORS LEAD TO A MAXIMUM ERROR OF RK71 1 39 ABOUT 10 PERCENT IN LIFETIMES LONGER THAN 10**(-13) RK71 1 40 SECOND AND LESS FOR SHORTER LIFETIMES. RK71 1 41 ENDBIB 39 RK71 1 42 ENDSUBENT 1 RK71 199999 SUBENT RK71 2 0 RK71 2 1 BIB 2 8 RK71 2 2 REACTION 31P(P,GAMMA)32S RK71 2 3 COMMENTS MEASURED LIFETIMES OF LEVELS IN 32S ARE GIVEN. DATA RK71 2 4 OBTAINED FROM TABLE I OF THE ORIGINAL PAPER. EI = RK71 2 5 ENERGY OF INITIAL STATE OF GAMMA-RAY TRANSITION. EF RK71 2 6 = ENERGY OF FINAL STATE. TAU = MEAN LIFETIME. TAU-ERR RK71 2 7 = ERROR IN TAU. FEMTOSEC = 10**(-15) SEC. A BLANK RK71 2 8 ENTRY INDICATES THAT THE VALUE IS NOT AVAILABLE IN THE RK71 2 9 ORIGINAL PAPER. RK71 2 10 ENDBIB 8 RK71 2 11 DATA 4 4 RK71 2 12 EI EF TAU TAU-ERR RK71 2 13 MEV MEV FEMTOSEC FEMTOSEC RK71 2 14 2.23 0. 175. 30. RK71 2 15 5.01 2.23 1000. 400. RK71 2 16 6.23 2.23 130. 40. RK71 2 17 9.389 6.23 1. RK71 2 18 ENDDATA 6 RK71 2 19 ENDSUBENT 2 RK71 299999 SUBENT RK71 3 0 RK71 3 1 BIB 2 11 RK71 3 2 REACTION 31P(P,GAMMA)32S RK71 3 3 COMMENTS RADIATIVE TRANSITION STRENGTHS IN 32S ARE GIVEN. DATA RK71 3 4 ARE OBTAINED FROM TABLE II OF THE ORIGINAL PAPER. RK71 3 5 EI = ENERGY OF INITIAL STATE. EF = ENERGY OF FINAL RK71 3 6 STATE. J-PI(I) = SPIN/PARITY OF THE INITIAL STATE. RK71 3 7 J-PI(F) = SPIN/PARITY OF THE FINAL STATE. A NEGATIVE RK71 3 8 VALUE SIGNIFIES NEGATIVE PARITY. OTHERWISE, PARITY RK71 3 9 IS POSITIVE. MULT = RADIATION MULTIPOLARITY (E1, M1, RK71 3 10 E2). GAMMA(G) = RADIATIVE WIDTH. STRENG = TRANSITION RK71 3 11 STRENGTH. MILLEV = 10**(-3) EV. W.U. = WEISSKOPF RK71 3 12 UNITS. RK71 3 13 ENDBIB 11 RK71 3 14 DATA 7 5 RK71 3 15 EI J-PI(I) EF J-PI(F) MULT GAMMA(G) RK71 3 16 STRENG RK71 3 17 MEV NO-DIM MEV NO-DIM NO-DIM MILLEV RK71 3 18 W.U. RK71 3 19 2.23 2. 0. 0. E2 3.8 RK71 3 20 13.9 RK71 3 21 5.01 -3. 2.23 2. E1 0.66 RK71 3 22 4.5000E-05 RK71 3 23 6.23 -2. 2.23 2. E1 5.1 RK71 3 24 1.2000E-04 RK71 3 25 9.389 6.23 -2. E1 66000. RK71 3 26 3.1 RK71 3 27 9.389 6.23 -2. M1 66000. RK71 3 28 0.01 RK71 3 29 ENDDATA 14 RK71 3 30 ENDSUBENT 3 RK71 399999 ENDENTRY 3 RK719999999