Differential Production Cross Sections for Isotopes of Light Nuclei in the $$\boldsymbol{{}^{18}\textrm{O}+^{181}}$$Ta Reaction

Azhibekov, A. K.; Zernyshkin, V. A.; Маслов, В. А.; Penionzhkevich, Yu. É.; Mendibayev, K.; Issatayev, T.; Науменко, М. А.; Скобелев, Н. К.; Stukalov, S. S.; Aznabaev, D.

doi:10.1134/s1063778820010032

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…When measuring the time of flight of paired fragments, experimental data are obtained in the form of two-dimensional velocity spectra. The transition from the velocity to the mass and energy of the fragments is made unambiguously using the expressions (2,3). It should be taken into account that this approach requires the use of the assumption of a two-body reaction mechanism and compliance with the condition that the mass of…”

Section: Time-of-flight Of Fission Fragments Measuring Methodsmentioning

confidence: 99%

“…Multi-parameter facilities for correlation measurements are widely used in modern experiments for studying the properties of exotic nuclei and the mechanisms of nuclear reactions with heavy ions. For this purpose, the precision magnetic spectrometer MAVR [1][2][3] was created at the Flerov Laboratory of Nuclear Reactions. It is located on the stable and radioactive heavy ion beams channel of accelerator complex DRIBS in the FLNR, JINR [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Time-of-flight fission fragment spectrometer of the MAVR facility

Aznabayev

Zeinulla

Issatayev

et al. 2021

Eurasian J. Phys. Funct. Mater.

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A time-of-flight system was created to register the reaction products and perform correlation measurements on a high-resolution magnetic analyzer (MAVR). The facility is located on the channel of the extracted beam of the U-400 cyclotron at the Laboratory of Nuclear Reactions JINR. The results of measuring the parameters of the time-of-flight spectrometer obtained on the basis of measuring the spontaneous fission fragments velocities of 252Cf are described. In addition, the results of the measurement of fission fragments in the 48Ca+238U reaction are presented. In this case, two time-of-flight arms were used, with the help of it is planned to carry out correlation measurements of induced fission fragments of a complex system. The created system also makes it possible to carry out correlation (three particles) measurements of fission fragments with particles registered in the focal plane of the MAVR magnetic spectrometer. Another purpose of the described system is to register elastically scattered ions, which is used as a monitoring system for the quality and composition of the beam hitting on the target of the MAVR facility.

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Section: Time-of-flight Of Fission Fragments Measuring Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Time-of-flight fission fragment spectrometer of the MAVR facility

Aznabayev

Zeinulla

Issatayev

et al. 2021

Eurasian J. Phys. Funct. Mater.

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“…The experiment with 18 O beams at energy E = 10 MeV/nucleon was carried out at the U400 cyclotron of the Flerov Laboratory of Nuclear Reactions (JINR) using the high-resolution magnetic separator MSP-144 [8][9][10]. The target, Ta foil of 6 mg • cm −2 thick, was placed inside the scattering chamber.…”

Section: Methodsmentioning

confidence: 99%

Neutron pick-up reactions in 18O (10 MeV/nucleon) + Ta

Issatayev

Hue

Маслов

et al. 2020

Eurasian J. Phys. Funct. Mater.

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The availability of new radioactive ion beams has broadened the study of nuclear reactions and nuclear structure. The main mechanism to produce the secondary beams is the fragmentation of the projectile. An alternative method for the production of the exotic nuclei is the multinucleon transfer. We measured production cross section for the B, C, N and O isotopes in the reaction 18O + Ta and the beam energy at 10 MeV/nucleon. The cross-sections were obtained by integrating the momentum distributions of the isotopes. It was shown that in deep inelastic processes the production yields of different isotopes could be well described using statistical models and could also be explained by the Qgg-systematic.

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“…Production of neutron-rich nuclides in damped collisions has been studied recently with novel applications of a few recoil separators which were not originally designed and built for this purpose [16][17][18]. Production of nuclei far from the stability region in multi-nucleon transfer reactions using a high resolution magnetic spectrometer has also been reported recently [19].…”

Section: Introductionmentioning

confidence: 99%

Determination of $1p$ and $2p$ stripping excitation functions for $^{16}$O+$^{142}$Ce using a Recoil Mass Spectrometer

Biswas¹,

Nath²,

Gehlot³

et al. 2021

Preprint

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We report the first direct measurement of differential transfer cross sections using a Recoil Mass Spectrometer. Absolute differential 1p and 2p-stripping cross sections at θ c.m. = 180 • have been determined for the system 16 O+ 142 Ce by detecting the heavier target-like ions at the focal plane of the Heavy Ion Reaction Analyzer. Focal plane spectra have been compared with the results of a semi-microscopic Monte-Carlo simulation to unambiguously identify the transfer channels. Transmission efficiency of the target-like ions through the spectrometer has also been estimated using the simulation which has been crucial to extract the cross sections from the yields of ions measured during the experiment. The methodology adopted in this work can be applied to measure multi-nucleon transfer cross sections using other similar recoil separators. The experimental excitation functions for the reactions 142 Ce( 16O, 15 N) 143 Pr and 142 Ce( 16 O, 14 C) 144 Nd have been compared with coupled reaction channel calculations. An excellent matching between measurement and theory has been obtained. For 1p-stripping, major contribution to the cross section has been found to be the transfer of a proton from 16 O to the 2d 5 2 excited state of 143 Pr, leaving behind 15 N in the 1p 1 2 ground state. Transfer of a cluster of two protons from 16 O to the 2 + excited state of 144 Nd, resulting in 14 C in the 0 + ground state, appears to be the most probable cause for 2p-stripping. Measured transfer probabilities for 1p and 2p channels have been compared with Time-Dependent Hartree-Fock calculations. Proton stripping channels are found to be more favourable compared to neutron pick-up channels. However, the theory overpredicts the measurement hinting at the need for extended approaches with explicit treatment of pairing correlations in the calculations.

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Differential Production Cross Sections for Isotopes of Light Nuclei in the $$\boldsymbol{{}^{18}\textrm{O}+^{181}}$$Ta Reaction

Cited by 6 publications

References 5 publications

Time-of-flight fission fragment spectrometer of the MAVR facility

Time-of-flight fission fragment spectrometer of the MAVR facility

Neutron pick-up reactions in 18O (10 MeV/nucleon) + Ta

Determination of $1p$ and $2p$ stripping excitation functions for $^{16}$O+$^{142}$Ce using a Recoil Mass Spectrometer

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