Fluctuations in polarized proton scattering from 28Si

Hurd, J.W.; Glashausser, C.; Kaita, R.; King, H.T.; Robbins, A.B.; Latzel, G.; Schieck, H. Paetz gen.; Clement, H.

doi:10.1016/0375-9474(79)90001-0

Cited by 5 publications

(11 citation statements)

References 10 publications

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“…The condition (14) can be proved for rather wide range of scattering angles near ~c/2 when N=Nma X [4,5] and N I=N 2 = Nmax/2 (see Appendix 1). Proceeding away from ~/2 value into the range of forward and backward angles where the effective number of independent channels becomes smaller N<Nma X [4,5], one cannot succeed in establishing the statistical independence of a and b in the general case because of the complicated calculations involved here.…”

Section: Afl=a(as) Bfl=b(;js) Afi=af+bfl=o((~s )mentioning

confidence: 97%

“…In deriving (19) it has been taken into account that the effective number of independent channels N corresponding to the total cross section is twice as great as those (N~ and N2) for the cross sections a and b. The last statement is the straightforward consequence of uncorrelation condition (14). For N=2 (19) leads to the result of [24].…”

Section: Rn(x Z) = Rn~ (X ) Rn~(z)mentioning

confidence: 99%

“…The measurements were taken in 50 keV steps. It should be noted, that in [14] the cross-correlation analysis was performed. It is established that crosscorrelation between cross sections corresponding to the excitation of different levels of 28Si are generally consistent with zero.…”

Section: Analysis Of Experimental Datamentioning

confidence: 99%

“…It was shown that both SC analysis and method [17] gives very well fitted results, namely Ad= 0.18; Ye =0.9. Let us apply SC method to the analysis of the inelastic scattering of 12-15 MeV polarized protons on 2ssi [14]. The measurements were taken in 50 keV steps.…”

Section: Analysis Of Experimental Datamentioning

confidence: 99%

“…Recent advances in polarized beam technique have resulted in numerous experiments on the fluctuations of polarization observables (see, for instance, Ref. [6][7][8][9][10][11][12][13][14] and review [-15]). The first theoretical work on this subject is [16].…”

Section: Introductionmentioning

confidence: 99%

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Analyzing power fluctuations in nuclear reactions

Kun

1985

Z Physik A

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The joint analysis of differential analyzing power (AP) and differential cross section in the nuclear reactions of 1/2+J1--+J2+J3 type in the region of strongly overlapping resonances are presented. Consideration is valid in the absence of the channel-channel compound nuclear correlations. The fluctuations of AP and cross section are proved to be statistically correlated, the greater the direct contribution to the reaction cross section the stronger this correlation. For the purely statistical reactions the correlation is absent. It is shown that the joint investigation of the AP and cross section fluctuations gives possibility to extract the direct reaction AP and the separate the direct and compound nucleus contributions into the reaction cross section. In particular it can be done by means of the statistical correlation (SC) analysis. Furthermore, the SC analysis may serve as a test for revealing the intermediate structure involved in the reaction. Finally, the joint study of differential AP and differential cross section may be used to determine the spins of nuclear levels and polarization of incident beam. The results are employed to separate the compound and direct contributions in the inelastic scattering of polarized protons on 2SSi. Comparison with experiment quantitatively supports the existence of the SC between the fluctuations of AP and cross section. Possible extension of the SC analysis to the case of the presence of channel-channel compound nuclear correlations are discussed.

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