Inclusive particle spectra from light-ion fragmentation processes

Sitenko, A.G.; Polozov, A.D.; Evlanov, M.V.; Sokolov, A.M.

doi:10.1016/0375-9474(85)90137-x

Cited by 16 publications

(3 citation statements)

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“…Later on, Sitenko [Sitenko et al (1967)] pointed out that the diffraction processes can also occur during the interaction of weakly-bound cluster-type light ions accelerated up to the comparatively high energies. In 1985 Sitenko [Sitenko et. al.…”

Section: Cross Section Of Nuclear Dissociationmentioning

confidence: 99%

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Projectile fragmentation of 6,7Li nuclei in photoemulsion at Dubna energy

Mekhimar¹,

Tabal²,

El-Sharkawy³

et al. 2014

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Stripping and diffraction dissociation processes of 6 Li at incident momentum 4.5AGeV/c and 7 Li at incident momentum 3AGeV/c, provided by the JINR Synchrophastron, were studied using the photoemulsion technique. The two stable isotopes of 6 Li and 7 Li were treated as two weakly-bound systems composed of (4 He+d) and (4 He+t) cluster configurations, respectively. Along the track double scanning method was carried out in order to search for 6,7 Li interactions in emulsion (Em). For 6 Li-Em about 1050 inclusive events were recorded with mean free path 14.5 ± 0.5 cm while about 1015 events were detected for 7 Li-Em with mean free path 15.1 ± 0.6 cm. The type of momentum distribution inside the projectile according to which the features of each mechanism can be correctly explained and the difference between the angular distributions of these processes are theoretically discussed. The total cross sections of both stripping and dissociation are estimated theoretically as well as experimentally. The measured angular distributions of the outgoing fragments were compared with that calculated theoretically and good agreement between the experimental and theoretical values is obtained. This agreement supported the presence of 6,7 Li nuclei in a cluster mode at high energy reactions.

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Section: Cross Section Of Nuclear Dissociationmentioning

confidence: 99%

“…For simplicity and without loss of generality, we shall take the wave functions of the cluster relative motion before and after collision to be [Sitenko et al (1985)]:…”

Section: Angular Distribution Of the Outgoing Fragmentsmentioning

confidence: 99%

Projectile fragmentation of 6,7Li nuclei in photoemulsion at Dubna energy

Mekhimar¹,

Tabal²,

El-Sharkawy³

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Unlike the cross sections usually observed at smaller momentum transfer showing the familiar bell-shaped distributions of the fragmentsaraund the beam-velocity energies, these particular experimental coincidence cross sections exhibit conspicuously structured distributions, rapidly changing with the relative emission angles. First analyses 9 -11 of the data within the DWBA and the diffractive dissociation approach 12 reveal considerable sensitivities to the actual ingredients of the calculations, i.e. the scattering potentials and scattering amplitudes, respectively as well as to the assumptions on the internal momentum distribution I ~a !…”

Section: Introductionmentioning

confidence: 99%