Cumulative protons in the 9Be(12C,p)X reaction at 0.2–3.2 GeV/nucleon

Abramov, B. M.; Alexeev, Pavel; Borodin, Yu. A.; Bulychjov, S. A.; Dukhovskoy, I. A.; Kaǐdalov, A. B.; Krutenkova, A. P.; Kulikov, V.; Martemianov, M.; Matsyuk, M.; Turdakina, E. N.; Khanov, A.

doi:10.3103/s1062873811040034

Cited by 6 publications

(6 citation statements)

References 5 publications

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“…Fragments with different charge and mass were unambiguously selected in two-dimensional plots dE/dx vs TOF. The set up has been described in more details in [3] and [4]. The proton momentum spectrum was obtained by beam line energy scan in steps of 50-100 MeV/c and protons were selected by above mentioned procedure.…”

Section: Methodsmentioning

confidence: 99%

Protons with large momentum from C-12 fragmentation at 300 MeV/nucleon

Kulikov¹

2013

Proceedings of XXI International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXI)

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Section: Methodsmentioning

confidence: 99%

Protons with large momentum from C-12 fragmentation at 300 MeV/nucleon

Kulikov¹

2013

Proceedings of XXI International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXI)

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“…Second, in inverse kinematics, there is no problems with the detection of fragments that are at rest in the projectile rest frame, because, in laboratory frame, they move at the projectile speed. Partially, the data of this experiment on the yields of cumulative protons were analyzed in [1][2][3] on the basis of the hypothesis that multiquark clusters exists in nuclei [4]. It was shown that this approach provides a reasonable description of proton momentum spectra in this problematic region.…”

Section: Introductionmentioning

confidence: 99%

Protons from carbon ion fragmentation at 0.3–2.0 GeV/nucleon: Comparison with models of ion-ion interactions

et al. 2015

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Yields of protons at 3.5 • from carbon ion fragmentation at energies of T 0 = 0.3, 0.6, 0.95, and 2.0 GeV/nucleon on a Be target were measured in the FRAGM experiment at TWA-ITEP heavy-ion facility. Proton momentum spectra cover both the region of the fragmentation maximum and the cumulative region. The differential cross sections span six orders of its magnitude. The spectra are compared with the predictions of four models of ion-ion interactions: LAQGSM03.03, SHIELD-HIT, QMD, and BC.

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“…The experiment FRAGM [6] was carried out at the heavy-ion complex ITEP TWA which includes an ion laser source, a linear accelerator, a booster ring and the 4 GeV/nucleon accelerator main ring. The fragments of the carbon nucleus produced at an internal thin Be target at 3.5 o were momentum analyzed by the two-step beam channel with intermediate and final focuses at 16 and 32 meters from the target.…”

Section: Methodsmentioning

confidence: 99%

“…Such states arise while considering the transition from hadron to quark-gluon degrees of freedom in nuclear matter at high densities [5]. We have performed the experiment FRAGM [6] at ITEP TWA (Tera Watt Accumulator) heavy ion accelerator complex with the main goal to take data at high momenta of nuclear fragments. The production of cumulative particles in hadronnucleus interactions was considered previously in [7] in the framework of the quark-gluon string model (QGSM).…”

Section: Introductionmentioning

confidence: 99%

Nuclear fragmentation study at ITEP heavy ion facility

Abramov

Alekseev

Borodin

et al. 2012

J. Phys.: Conf. Ser.

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Projectile structure effects in multi-nucleon and cluster transfers in 16,18 O+ 164 Dy, 208 Pb reactions D C Biswas, Pratap Roy, Y K Gupta et al. -Comparison of models of neutron and residue production in targets heavy elements irradiated by relativistic proton and deuteron beams P Zhivkov, A Polanski, Ch Stoyanov et al. Abstract. In an experiment performed at ITEP TWA heavy ion accelerator, the yields of hydrogen (p,d,t) and helium (from 3 He to 8 He) isotopes at 3.5 o from fragmentation of 12 C at T0 = 0.2 -3.2 GeV/nucleon on a Be target have been measured. Momentum spectra of the fragments in the projectile rest frame have been obtained in larger momentum intervals than in the previous experiments with heavy ion beams. The main attention was given to the region of high momentum where fragment velocity exceeds the velocity of the projectile nucleus. The obtained data cover about 6 orders of the differential cross section magnitude. It made possible the observation of a transition from the Gaussian shape of the longitudinal momentum spectra in projectile rest frame, expected for the evaporation mechanism, to the exponential shape, typical for the cumulative (pre-equilibrium) processes. The Feynman x distributions for protons are analyzed in the framework of quark-gluon string model. The probabilities of existence of sixand nine-quark clusters are estimated and compared with the results on two-(three-) nucleon short range correlations in nuclei measured at Jefferson Laboratory.

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Cumulative protons in the 9Be(12C,p)X reaction at 0.2–3.2 GeV/nucleon

Cited by 6 publications

References 5 publications

Protons with large momentum from C-12 fragmentation at 300 MeV/nucleon

Protons with large momentum from C-12 fragmentation at 300 MeV/nucleon

Protons from carbon ion fragmentation at 0.3–2.0 GeV/nucleon: Comparison with models of ion-ion interactions

Nuclear fragmentation study at ITEP heavy ion facility

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