29 research outputs found

    Study of Proton and Deuteron Pickup Reactions 2H(10Be,3He)9Li an 2H(10Be,4He)8Li with 44 A MeV 10Be Radioactive Beam at ACCULINNA-2 Fragment Separator

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    The proton and deuteron pickup reactions 2H(10Be,3He)9Li and\\ 2H(10Be,4He)8Li radioactive beam produced by the new fragment separator ACCULINNA-2 at FLNR, JINR\@. These measurements were initially motivated as test reactions intended for the elucidation of results obtained in the study of the extremely neutron-rich 7H and 6H systems created in the 2H(10Be,3He)9Li and 2H(10Be,4He)8Li reactions using the same setup. In the 2H(10Be,3He)9Li reaction the 9Li ground-state (3/23/2^-) and its first excited state (2.69~MeV, 1/21/2^-) were identified in the low-energy region of its excitation spectrum. The differential cross sections for the 9Li g.~s.) population were extracted at forward center-of-mass angles (3133^\circ-13^\circ) and compared with the FRESCO calculations. Spectroscopic factor of 1.7\sim 1.7, derived by a model for the 10Be=p+ = p +9Li(g.s.) clustering was found in accord with the experimental data. The energy spectrum of 8Li populated in the 2H(10Be,4He)8Li reaction shows the strong peak which corresponds to excitation of the second excited state of 8Li (2.25 MeV, 3+3^+). The fact that the ground and the first excited states of 8Li were not observed is fully consistent with Shell-Model calculations carried out for the 10Be g.\,s. and 8Li level structure applying momentum selection rules

    OPTIMIZATION OF PRESENTATION AND CONSUMER CONTAINER OF ANTI-RABIES IMMUNOGLOBULIN OBTAINED FROM HORSE SERUM

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    We presented the data concerning optimization of presentation and consumer container of anti-rabies immunoglobulin obtained, from horse serum.. During the experiments, ampoules and. flasks were used for primary packaging. They were filled within 5 ml of the preparation of freeze-drying. Comparative analysis of physical, chemical and. biological properties and. molecular parameters of freeze-dried and initial forms of the immunoglobulin. was carried out. Freeze-drying was demonstrated to promote stabilization of its properties and. prevent emergence of fragments and. aggregates during anti-rabies immunoglobulin storage

    The 6^{6}H states studied in the d(8He,α)d(^8\text{He},\alpha) reaction and evidence of extremely correlated character of the 5^{5}H ground state

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    The extremely neutron-rich system 6^{6}H was studied in the direct 2H(8He,4He)6^2\text{H}(^8\text{He},{^4\text{He}})^{6}H transfer reaction with a 26 AA MeV secondary 8^{8}He beam. The measured missing mass spectrum shows a resonant state in 6^{6}H at 6.8(3)6.8(3) MeV relative to the 3^3H+3n3n threshold. The population cross section of the presumably pp-wave states in the energy range from 4 to 8 MeV is dσ/dΩc.m.190(40)d\sigma/d\Omega_{\text{c.m.}} \simeq 190(40) μ\mub/sr in the angular range 5<θc.m.<165^{\circ}<\theta_{\text{c.m.}}<16^{\circ}. The obtained missing mass spectrum is free of the 6^{6}H events below 3.5 MeV (dσ/dΩc.m.3d\sigma/d\Omega_{\text{c.m.}} \lesssim 3 μ\mub/sr in the same angular range). The steep rise of the 6^{6}H missing mass spectrum at 3 MeV allows to show that 4.5(3)4.5(3) MeV is the lower limit for the possible resonant state energy in 6^{6}H tolerated by our data. According to paring energy estimates, such a 4.5(3)4.5(3) MeV resonance is a realistic candidate for the 6^{6}H ground state (g.s.). The obtained results confirm that the decay mechanism of the 7^{7}H g.s.\ (located at 2.2 MeV above the 3^{3}H+4n4n threshold) is the ``true'' (or simultaneous) 4n4n emission. The resonance energy profiles and the momentum distributions of the sequential 6^{6}H \,\rightarrow \, ^5H(g.s.)+n\, \rightarrow \, ^3H+3n3n decay fragments were analyzed by the theoretically-updated direct four-body-decay and sequential-emission mechanisms. The measured momentum distributions of the 3^{3}H fragments in the 6^{6}H rest frame indicate very strong ``dineutron-type'' correlations in the 5^{5}H ground state decay.Comment: 9 pages, 11 figure

    Storage, Accumulation and Deceleration of Secondary Beams for Nuclear Astrophysics

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    Low-energy investigations on rare ion beams are often limited by the available intensity and purity of the ion species in focus. Here, we present the first application of a technique that combines in-flight production at relativistic energies with subsequent secondary beam storage, accumulation and finally deceleration to the energy of interest. Using the FRS and ESR facilities at GSI, this scheme was pioneered to provide a secondary beam of 118^{118}Te52+^{52+} for the measurement of nuclear proton-capture at energies of 6 and 7 MeV/u. The technique provided stored beam intensities of about 10610^6 ions at high purity and brilliance, representing a major step towards low-energy nuclear physics studies using rare ion beams

    CMS physics technical design report : Addendum on high density QCD with heavy ions

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