Under the assumption that the matrix elements of the divergences of the dilation current (~"2~= 0... more Under the assumption that the matrix elements of the divergences of the dilation current (~"2~= 0~) are dominated by two poles, it is shown that the present experimental data for the dilaton (~) are consistent with an unsubtractcd dispersion relation of F(q2)z(PIO~IP) (=~, K or ~), a significant SU 3 violation in ~PP couplings and no apparent singlet-octet mixing for the scalar mesons. As far as the slope I"=_l"/dq2lq,=o is concerned, in the SU3 symmetry limit we have F'_ ~ 1, while SUa-symmetry-breaking effects change this value to F '~ _ 0.5 in consistency with a general theorem given by 0kubo. By demanding maximal smoothness we obtain that the scale dimension of the scalar densities (which break ehiral SU3• 3 as well as scale symmetries in the energy density) is d~= I. However, our general relation between the dilaton mass (m~) and the dimension d~ (eq. (31)) gives m,~_~ 700 MeV, 600 MeV and 400 MeV for d~= 1, 2 and 3 respeclively. O.Jx) is the local stress energy-momentum tensor for hadrons, such theft the generators of the Poincar5 gro~lp are represented as follows: (1) P. = f O~o(X) d3x , (2) Jl,~ = f (x.O~o(x)-%0~o(x)) d3x' (*) To speed up publication, the author of this paper has agreed to not receive the proofs for correction.
Abstract A theoretical model for equation of state (EOS) of aluminum with helium bubbles is prese... more Abstract A theoretical model for equation of state (EOS) of aluminum with helium bubbles is presented. Based on this EOS, the influence of helium bubbles on shock loading is examined. The Hugoniot curve (temperature versus pressure as well as shock velocity ...
Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy ba... more Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy balances. Spark ignition models are in general identified as more effective alternatives than raw volume ignition. Nevertheless, it is demonstrated that volume ignition can yield very high energy gains comparable to spark ignition if the whole picture is properly taken into account. References are made to some outstanding experiments and to numerical simulations which support this tutorial explanation.
Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy ba... more Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy balances. Spark ignition models are in general identified as more effective alternatives than raw volume ignition. Nevertheless, it is demonstrated that volume ignition can yield very high energy gains comparable to spark ignition if the whole picture is properly taken into account. References are made to some outstanding experiments and to numerical simulations which support this tutorial explanation.
Measurements of the dynamic spall strength in Aluminum shocked by a high power laser to hundreds ... more Measurements of the dynamic spall strength in Aluminum shocked by a high power laser to hundreds of kilobars pressures are reported. The strain rates in these experiments are of the order of 107 s-1, which can not be reached in impact experiments. The free surface velocity behavior associated with spallation is characterized by oscillations caused by the reverberations of the
Under the assumption that the matrix elements of the divergences of the dilation current (~"2~= 0... more Under the assumption that the matrix elements of the divergences of the dilation current (~"2~= 0~) are dominated by two poles, it is shown that the present experimental data for the dilaton (~) are consistent with an unsubtractcd dispersion relation of F(q2)z(PIO~IP) (=~, K or ~), a significant SU 3 violation in ~PP couplings and no apparent singlet-octet mixing for the scalar mesons. As far as the slope I"=_l"/dq2lq,=o is concerned, in the SU3 symmetry limit we have F'_ ~ 1, while SUa-symmetry-breaking effects change this value to F '~ _ 0.5 in consistency with a general theorem given by 0kubo. By demanding maximal smoothness we obtain that the scale dimension of the scalar densities (which break ehiral SU3• 3 as well as scale symmetries in the energy density) is d~= I. However, our general relation between the dilaton mass (m~) and the dimension d~ (eq. (31)) gives m,~_~ 700 MeV, 600 MeV and 400 MeV for d~= 1, 2 and 3 respeclively. O.Jx) is the local stress energy-momentum tensor for hadrons, such theft the generators of the Poincar5 gro~lp are represented as follows: (1) P. = f O~o(X) d3x , (2) Jl,~ = f (x.O~o(x)-%0~o(x)) d3x' (*) To speed up publication, the author of this paper has agreed to not receive the proofs for correction.
Abstract A theoretical model for equation of state (EOS) of aluminum with helium bubbles is prese... more Abstract A theoretical model for equation of state (EOS) of aluminum with helium bubbles is presented. Based on this EOS, the influence of helium bubbles on shock loading is examined. The Hugoniot curve (temperature versus pressure as well as shock velocity ...
Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy ba... more Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy balances. Spark ignition models are in general identified as more effective alternatives than raw volume ignition. Nevertheless, it is demonstrated that volume ignition can yield very high energy gains comparable to spark ignition if the whole picture is properly taken into account. References are made to some outstanding experiments and to numerical simulations which support this tutorial explanation.
Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy ba... more Ignition models for Inertial Confinement Fusion (ICF) are analyzed on the basis of fuel energy balances. Spark ignition models are in general identified as more effective alternatives than raw volume ignition. Nevertheless, it is demonstrated that volume ignition can yield very high energy gains comparable to spark ignition if the whole picture is properly taken into account. References are made to some outstanding experiments and to numerical simulations which support this tutorial explanation.
Measurements of the dynamic spall strength in Aluminum shocked by a high power laser to hundreds ... more Measurements of the dynamic spall strength in Aluminum shocked by a high power laser to hundreds of kilobars pressures are reported. The strain rates in these experiments are of the order of 107 s-1, which can not be reached in impact experiments. The free surface velocity behavior associated with spallation is characterized by oscillations caused by the reverberations of the
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