Some physical properties of neptunium metal—I

Evans, J.P.; Mardon, P.G.

doi:10.1016/0022-3697(59)90006-x

Cited by 16 publications

(4 citation statements)

References 2 publications

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“…4 This is contrary to our expectations since solvation should increase the size of a molecule in solution, and we might well expect a to be larger than the structural radius. Nonetheless, Eq.…”

Section: Introductioncontrasting

confidence: 81%

“…For CI0 2 molecules (Iz= 1.6X 10-39 go cm 2 ) in liquid acetone the correlation time for angular momentum (Tz) is about 2X1Q-14 sec at 300 o K. 4 We do not know the mean square intermolecular torque ('J}) but we might estimate it at about 40(kT)2.8 (S.Sa) and (S.Sb) from experiment.…”

Section: Discussionmentioning

confidence: 97%

“…4 We shall discuss the validity and limitations of this equation on a molecular basis. 4 We shall discuss the validity and limitations of this equation on a molecular basis.…”

Section: Introductionmentioning

confidence: 99%

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Rotational Relaxation in Fluids

Kivelson¹,

Kivelson²,

Oppenheim³

1970

The Journal of Chemical Physics

148

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In this paper a number of expressions for angular momentum and reorientation correlation times are obtained. The inverse of the angular momentum correlation time is related to a sum of two terms, one of which involves the shear viscosity of the medium and the other of which describes the precessional relaxation of the molecule. The derivation is based on the similarity of the time dependences of the torque and the force exerted on the molecule of interest. The reorientation correlation time is related to the angular momentum relaxation time in the diffusion and the near-diffusion limits. The expressions obtained here have been confirmed by a number of ESR experiments.

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Section: Introductioncontrasting

confidence: 81%

Section: Discussionmentioning

confidence: 97%

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Rotational Relaxation in Fluids

Kivelson¹,

Kivelson²,

Oppenheim³

1970

The Journal of Chemical Physics

148

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“…Besides clearly illustrating that what appears in the journal has vastly changed, the letter showed the density of the metal was between U and Pu with a Vickers hardness of 355. The basic physical properties and crystal structures of Np were soon elaborated on by Evans and Mardon (1959) and Lee et al (1959), specifically examining the three allotropic phases of the metal, α, β, and γ. Subsequently, Mössbauer spectroscopy was performed using nuclear γ-ray resonance by Dunlap et al (1970), revealing the highly anisotropic lattice vibrations in α-Np.…”

Section: Neptuniummentioning

confidence: 99%

Nature of the5fstates in actinide metals

2009

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Actinide elements produce a plethora of interesting physical behaviors due to the 5f states. This review compiles and analyzes progress in understanding of the electronic and magnetic structure of the 5f states in actinide metals. Particular interest is given to electron energy-loss spectroscopy and many-electron atomic spectral calculations, since there is now an appreciable library of core d → valence f transitions for Th, U, Np, Pu, Am, and Cm. These results are interwoven and discussed against published experimental data, such as x-ray photoemission and absorption spectroscopy, transport measurements, and electron, x-ray, and neutron diffraction, as well as theoretical results, such as density-functional theory and dynamical mean-field theory.

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