types_of_experiments
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| In knockout reactions, a nucleon is removed from the projectile nucleus upon peripheral collision with a light reaction target (typically 9Be). The momentum of the knocked-out nucleon and that of the final residue are related by momentum conservation. With the S800 spectrograph the reaction products behind the reaction target can be identified and the longitudinal momentum distribution of the residue of interest can be measured. The shape of this momentum distribution depends on the total angular momentum of the removed nucleon and can serve to assign the l value involved. Gamma-ray spectroscopy in coincidence with the detection of knockout residues has been successfully employed in the past to identify the final state and to determine the cross section for the population of individual excited states in this reaction mechanism. | In knockout reactions, a nucleon is removed from the projectile nucleus upon peripheral collision with a light reaction target (typically 9Be). The momentum of the knocked-out nucleon and that of the final residue are related by momentum conservation. With the S800 spectrograph the reaction products behind the reaction target can be identified and the longitudinal momentum distribution of the residue of interest can be measured. The shape of this momentum distribution depends on the total angular momentum of the removed nucleon and can serve to assign the l value involved. Gamma-ray spectroscopy in coincidence with the detection of knockout residues has been successfully employed in the past to identify the final state and to determine the cross section for the population of individual excited states in this reaction mechanism. | ||
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| //Figure taken and modified from D. Warner, Nature 425, 570 (2003)// | //Figure taken and modified from D. Warner, Nature 425, 570 (2003)// | ||
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| //Figure taken from: A.Gade et al., Detailed experimental study on intermediate-energy Coulomb excitation of 46Ar, Phys. Rev. C 68, 014302 (2003).// | //Figure taken from: A.Gade et al., Detailed experimental study on intermediate-energy Coulomb excitation of 46Ar, Phys. Rev. C 68, 014302 (2003).// | ||
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| The S800 spectrograph has been successfully used in the past to determine the scattering angle of the particles after the interaction with the target on an event-by-event basis. This allows to analyze the Coulomb excitation at various impact parameters selected offline by applying a software gate on the corresponding scattering angle. | The S800 spectrograph has been successfully used in the past to determine the scattering angle of the particles after the interaction with the target on an event-by-event basis. This allows to analyze the Coulomb excitation at various impact parameters selected offline by applying a software gate on the corresponding scattering angle. | ||
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types_of_experiments.1386877871.txt.gz · Last modified: 2013/12/12 14:51 by pereira
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