Excitation functions of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">I</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>127</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>,</mml:mo><mml:mi> </mml:mi><mml:mi>π</mml:mi><m

Excitation functions have been determined for the formation of ten iodine nuclides (" I -' I) in the interaction of 60 -350 MeV m+ and m with ' I. The contribution of various reaction mechanisms has been estimated from the systematic features of the excitation functions and isotopic yield distributions with the aid of cross sections obtained for the production of various isobaric xenon nuclides, cross-section results for 500 MeV proton bombardment of ' I, and comparison with Monte Carlo cascade-evaporation calculations. It is found that, with varying importance, mechanisms involving direct neutron knockout, pion inelastic scattering plus evaporation, pion absorption, and pion charge exchange contribute to the observed yields. NUCLEAR REACTIONS ' 'I(m. -+,m.xn), x =1 -10, excitation functions (activation), T"=60 -350 MeV. KI targets. Deduced reaction mechanisms.

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Excitation functions of theI127(π, πxn)reactions in the region of the (3,3) re

Ohkubo

Porile

Orth

et al. 1983

Phys. Rev. C

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Kinematically complete measurement of the (π±,π±p) reaction on
Faucett¹,
Wood²,
McDaniels³
et al. 1984
Phys. Rev. C
7
0
3
0
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The "C(n.-, m -+ p) reactions were studied at T = 220 MeV. The final particles were detected both separately and in coincidence and their momenta were measured. Calculation of the excitation energy of the residual nucleus allowed clear separation of events where an outer proton was removed. The data provide detailed evidence confirming the quasielastic picture of pion knockout reactions.Evidence for this derives from the agreement between the peak energies found in the coincidence spectra and those found in inclusive spectra, from analysis of angular distributions, and from the location of peaks found in missing mass spectra. The coincidence cross section is found to account for about half of the (m. +, n. +') reaction, and about half of this in turn corresponds to quasifree knockout of the outer shell protons. Secondary processes in the (n. , m. p) reaction are found to play a much more important role than in the (n.+, m. +p) reaction.

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Interference effects in (π,πN) reactions

Ohkubo

Liu

1984

Phys. Rev. C

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Contributions of quasifree and nonquasifree reaction processes to (m,~N) reactions have been investigated across the (3,3) resonance region. %'e demonstrate that the quantum mechanical interference between these two types of reaction processes significantly affects the calculated m.and n.+induced cross sections, as well as their ratio. In the case of incident m, the contributions from the interference term even exceed those from the pure nonquasifree term. This investigation of the (m, m. N) reaction thus indicates that the interpretations given to the parameter introduced into various published semiclassical models, in which interference effects were ignored, are incorrect.

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Excitation functions of theI127(π±, π

Cited by 4 publications

References 14 publications

Excitation functions of theI127(π, πxn)reactions in the region of the (3,3) re

Excitation functions of theI127(π, πxn)reactions in the region of the (3,3) re

Kinematically complete measurement of the (π±,π±p) reaction on
Faucett¹,
Wood²,
McDaniels³
et al. 1984
Phys. Rev. C
7
0
3
0
View full text Add to dashboard Cite

Interference effects in (π,πN) reactions

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Excitation functions of theI127(π±, π

Cited by 4 publications

References 14 publications

Excitation functions of theI127(π, πxn)reactions in the region of the (3,3) re

Excitation functions of theI127(π, πxn)reactions in the region of the (3,3) re

Kinematically complete measurement of the (π±,π±p) reaction onFaucett1, Wood2, McDaniels3 et al. 1984Phys. Rev. C7030View full textAdd to dashboardCite

Interference effects in (π,πN) reactions

Contact Info

Product

Resources

About

Kinematically complete measurement of the (π±,π±p) reaction on
Faucett¹,
Wood²,
McDaniels³
et al. 1984
Phys. Rev. C
7
0
3
0
View full text Add to dashboard Cite