coulomb excitation data analysis codes; gosia 2007 - Physics and ...

More documents

Recommendations

Info

often a subset of the experiments is sensitive only to a subset of matrix elements. The SKP,X switchrequires additional input:I(1) The indices of experiments to be skipped (experimentsI(2) are numbered according to the sequence in which· they appear in the EXPT input)·I(X).......................................................................................................SMR, This control switch causes the input file for the SIGMA program (See Section 6) to be generatedwhen OP,ERRO is executed. This switch is ignored if OP,ERRO is not executed........................................................................................................TEN, Causes GOSIA to write the statistical tensors in the system of coordinates defined by Fig. 2.3 onTAPE17 when either OP,STAR or OP,POIN is executed. The tensors written are the pure Coulombexcitation tensors, as defined by 2.30, and can subsequently be used by external programs to examinethe γ-decay process (e.g. to study the deorientation effect). The structure of the statistical tensors fileis described in Chapter 7........................................................................................................VAC, This switch is used when it is desired to change the default parameters used to evaluate thevacuum deorientation effect (2.2.1). It requires the following additional input:I,X(I): where I =1, 2, ..., 7 specifies the parameter to be overwritten, X(I) being the new value. Two zerosend this input. Theparameters are defined as in 2.53 . The index value I is as follows:I X(I) Default value1 J 1 32 Γ 0.02(ps −1 )3 Λ ∗ 0.0345(ps −1 )4 τ c 3.5(ps)5 g Z/A6 K 6.10 −67 x 0.6Acommong factor is assumed for all nuclear levels. Note that g= Z/A often is a poor estimate. Theknown g factors of the lowest states can be used to give a better estimate.Since the lifetimes are given in picoseconds the field strength parameter K is 10 −12 times the true valuein gauss (the default values corresponds to 6.10 6 gauss). Note that OP,EXPT must occur in the input filebefore the CONT option VAC, otherwise OP,EXPT will overwrite the values set by VAC.The deorientation effect can be switched off (if, for example, the influence of deorientation on the resultis to be tested) by specifying:VAC,3, 0.6, 0.0, 0...................................................................................................WRN,X. This switch causes a warning message to be printed with the comparison of experimentaland calculated yields forthose yields for which the experimental and calculated values differ by more than X standard deviations.The default setting is X =3.68
5.4 OP,CORR (CORRECT )This execution-only option requires no input other than the command itself. It uses the file of originalexperimental yields (see Section 5-30), read from TAPE3, and writes on TAPE4 a set of yields which havebeen modified to correct for the difference between the yields calculated using full integration and the yieldscalculated using “mean“ values of the bombarding energy and scattering angle for each experiment (seeEquation 4.23). The modified (corrected) experimental yields, on TAPE4, then are used as data for theminimization and error estimation procedures. The OP,INTG and OP,CORR commands must be run as onejob with the OP,CORR command following OP,INTG in the sequence of option commands. The values ofthe mean energy and scattering angle used for the point calculations are those specified for each experimentin the EXPT input.Note that NTAP (specifying the file containing the experimental yields in OP,YIEL) must equal 3 whenusing the OP,CORR command (i.e. the file containing the original uncorrected experimental yields must beTAPE3).69
Page 1:
COULOMB EXCITATION DATA ANALYSIS CO
Page 4 and 5:
10 MINIMIZATION BY SIMULATED ANNEAL
Page 6 and 7:
1 INTRODUCTION1.1 Gosia suite of Co
Page 8 and 9:
104 Ru, 110 Pd, 165 Ho, 166 Er, 186
Page 13 and 14:
Figure 1: Coordinate system used to
Page 15 and 16:
Cλ E =1.116547 · (13.889122) λ (
Page 17 and 18: Figure 2: The orbital integrals R 2
Page 19 and 20: 2.2 Gamma Decay Following Electroma
Page 21 and 22: where :d 2 σ= σ R (θ p ) X R kχ
Page 23 and 24: Formula 2.49 is valid only for t mu
Page 25 and 26: Ã XK(α) =exp−iτ i (E γ )x i (
Page 27 and 28: important to have an accurate knowl
Page 29 and 30: 3 APPROXIMATE EVALUATION OF EXCITAT
Page 31 and 32: with the reduced matrix element M c
Page 33 and 34: q (20)s (0 + → 2 + ) · M 1 ζ (2
Page 35 and 36: esults of minimization and error ru
Page 37 and 38: adjustment of the stepsize accordin
Page 39 and 40: approximation reliability improves
Page 41 and 42: Zd 2 σ(I → I f )Y (I → I f )=s
Page 43 and 44: 4.5 MinimizationThe minimization, i
Page 45 and 46: X(CC k Yk c − Yk e ) 2 /σ 2 k =m
Page 47 and 48: However, estimation of the stepsize
Page 49 and 50: It can be shown that as long as the
Page 51 and 52: een exceeded; third, the user-given
Page 53 and 54: where f k stands for the functional
Page 55 and 56: x i + δx i Rx iexp ¡ − 1 2 χ2
Page 57 and 58: method used for the minimization, i
Page 59 and 60: OP,ERRO (ERRORS) (5.6):Activates th
Page 61 and 62: -----OP,SIXJ (SIX-j SYMBOL) (5.25):
Page 63 and 64: 5.3 CONT (CONTROL)This suboption of
Page 65 and 66: I,I1 Ranges of matrix elements to b
Page 67: CODE DEFAULT OTHER CONSEQUENCES OF
Page 71 and 72: 5.6 OP,ERRO (ERRORS)ThemoduleofGOSI
Page 73 and 74: 5.7 OP,EXIT (EXIT)This option cause
Page 75 and 76: M AControls the number of magnetic
Page 77 and 78: 5.10 OP,GDET (GE DETECTORS)This opt
Page 79 and 80: 5.12 OP,INTG (INTEGRATE)This comman
Page 81 and 82: ¡ dE¢dx1 ..¡ dEdx¢Stopping powe
Page 83 and 84: NI1, NI2 Number of subdivisions of
Page 85 and 86: 5.13 LEVE (LEVELS)Mandatory subopti
Page 87 and 88: 5.15 ME (OP,COUL)Mandatory suboptio
Page 89 and 90: Figure 10: Model system having 4 st
Page 91 and 92: ME =< INDEX2||E(M)λ||INDEX1 > The
Page 93 and 94: When entering matrix elements in th
Page 95 and 96: There are no restrictions concernin
Page 97 and 98: 5.18 OP,POIN (POINT CALCULATION)Thi
Page 99 and 100: 5.20 OP,RAW (RAW UNCORRECTED γ YIE
Page 101 and 102: 5.21 OP,RE,A (RELEASE,A)This option
Page 103 and 104: 5.25 OP,SIXJ (SIXJ SYMBOL)This stan
Page 105 and 106: 5.27 OP,THEO (COLLECTIVE MODEL ME)C
Page 107 and 108: 2,5,1,-2,23,5,1,-2,23,6,1,-2,2Matri
Page 109 and 110: 5.29 OP,TROU (TROUBLE)This troubles
Page 111 and 112: to that of the previous experiment,
Page 113 and 114: To reduce the unnecessary input, on
Page 115 and 116: OP,STAR or OP,POIN under OP,GOSI. N
Page 117 and 118: 5.31 INPUT OF EXPERIMENTAL γ-RAY Y
Page 119 and 120:
6 QUADRUPOLE ROTATION INVARIANTS -
Page 121 and 122:
*½P 5 (J) = s(E2 × E2) J ×¯h¾
Page 123 and 124:
The expectation value of cos3δ can
Page 125 and 126:
where ē is an arbitratry vector. D
Page 127 and 128:
achieved using “mixed“ calculat
Page 129 and 130:
TAPE9 Contains the parameters neede
Page 131 and 132:
TAPE18 Input file, containing the i
Page 133 and 134:
7.4.4 CALCULATION OF THE INTEGRATED
Page 135 and 136:
OP,EXITInput: TAPE4,TAPE7,TAPE9Outp
Page 137 and 138:
OP,ERRO0,MS,MEND,1,0,RMAXand the fi
Page 139 and 140:
8 SIMULTANEOUS COULOMB EXCITATION:
Page 141 and 142:
4, 3, 1kr88.corKr corrected yields
Page 143 and 144:
0 Correction for in-flight decay ch
Page 145 and 146:
OP, ERRO Estimation of errors of fi
Page 147 and 148:
9 COULOMB EXCITATION OF ISOMERIC ST
Page 149 and 150:
configurations with a probability e
Page 151 and 152:
The average range covered by each m
Page 153 and 154:
SFX,NTOTI1(1),I2(1),RSIGN(1)I1(2),I
Page 155 and 156:
11.2 LearningtoWriteGosiaInputsThe
Page 157 and 158:
(1.6 MeV)1.1 MeV0.75 MeV0.4 MeV0.08
Page 159 and 160:
Define the germaniumdetector geomet
Page 161 and 162:
Figure 15: Flow diagram for Gosia m
Page 163 and 164:
gosia < 2-make-correction-factors.i
Page 165 and 166:
Issue the commandgosia < 9-diag-err
Page 167 and 168:
At this point, it is suggested to c
Page 169 and 170:
calculation.) In this case, a copy
Page 171 and 172:
4,-4, -3.705, 3,44,5, 4.626, 3.,7.5
Page 173 and 174:
90145901459014590145901459014590145
Page 175 and 176:
.10.028921.10.026031.10.023431.10.0
Page 177 and 178:
5,5,634,650,82.000,84.000634,638,64
Page 179 and 180:
***********************************
Page 181 and 182:
*** CHISQ= 0.134003E+01 ***MATRIX E
Page 183 and 184:
CALCULATED AND EXPERIMENTAL YIELDS
Page 185 and 186:
11.7 Annotated excerpt from a Coulo
Page 187 and 188:
11.8 Accuracy and speed of calculat
Page 189 and 190:
18,10.056,0.068,0.082,0.1,0.12,0.15
Page 191 and 192:
line 152 Eu 182 Tanumber (keV) (keV
Page 193 and 194:
1.6 Normalization between data sets
Page 195 and 196:
13 GOSIA 2007 RELEASE NOTESThese no
Page 197 and 198:
Matrix elements 500(April 1990, T.
Page 199 and 200:
14 GOSIA Manual UpdatesDATE UPDATE2
Page 201 and 202:
[KIB08]T.Kibédi,T.W.Burrows,M.B.Tr
show all

coulomb excitation data analysis codes; gosia 2007 - Physics and ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?