2,303 research outputs found

    A study of energy release in rocket propellants by a projectile impact method Final report

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    Rate of energy release in solid rocket propellants determined by square shock waves produced by projectile impac

    A study of energy release in rocket propellants by a projectile impact method Annual report, 9 May 1966 - 9 May 1967

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    Projectile impact method for measuring rates of energy release in solid propellants subjected to strong shock wave

    A study of energy release in rocket propellants by a projectile impact method Annual report, 10 May 1967 - 9 May 1968

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    Experimental measurement of rates of energy release in solid propellants subjected to strong shock waves from projectile impac

    Low-energy three-body dynamics in binary quantum gases

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    The universal three-body dynamics in ultra-cold binary Fermi and Fermi-Bose mixtures is studied. Two identical fermions of the mass mm and a particle of the mass m1m_1 with the zero-range two-body interaction in the states of the total angular momentum L=1 are considered. Using the boundary condition model for the s-wave interaction of different particles, both eigenvalue and scattering problems are treated by solving hyper-radial equations, whose terms are derived analytically. The dependencies of the three-body binding energies on the mass ratio m/m1m/m_1 for the positive two-body scattering length are calculated; it is shown that the ground and excited states arise at m/m1≥λ1≈8.17260m/m_1 \ge \lambda_1 \approx 8.17260 and m/m1≥λ2≈12.91743m/m_1 \ge \lambda_2 \approx 12.91743, respectively. For m/m_1 \alt \lambda_1 and m/m_1 \alt \lambda_2, the relevant bound states turn to narrow resonances, whose positions and widths are calculated. The 2 + 1 elastic scattering and the three-body recombination near the three-body threshold are studied and it is shown that a two-hump structure in the mass-ratio dependencies of the cross sections is connected with arising of the bound states.Comment: 16 page
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