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Gr�neisen parameter for gases and superfluid helium
(2016-08-05)
The Gr�neisen ratio (Γ), i.e. the ratio of the thermal expansivity to the specific heat at constant pressure, quantifies the degree of anharmonicity of the potential governing the physical properties of a system. While ...
Magnetoplasmons no sistema de elétrons superficiais sobre hélio líquido confinado em um canal parabólico
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Física - PPGFCâmpus São Carlos, 2003-04-15)
A lot of experimental and theoretical work have been performed in order to understand the collective modes of two-dimensional electron system (2DES) confined to restricted geometries. In particular, the system of surface ...
Theoretical modeling of the RR Lyrae variables in NGC 1851
(2015)
The RR Lyrae instability strip (IS) in NGC 1851 is investigated, and a model is presented which reproduces the pulsational properties of the RR Lyrae population. In our model, a stellar component within the IS that displays ...
Determinación de la abundancia primordial de helio a partir de datos del SDSS
(Instituto Nacional de Astrofísica, Óptica y Electrónica., 2006)
MULTILINE DOPPLER IMAGING OF MR SER IN HIGH STATE
(IOP PUBLISHING LTD, 2009)
Doppler images in Balmer, He I, He II and C II lines, and simultaneous I-band photometry of the polar MR Ser are presented and analyzed. The Balmer and Helium Doppler tomograms, of this bright polar at high mass transfer ...
Intersubband excitations at finite temperatures and their roles in different quasi-one-dimensional systems
(Sociedade Brasileira de Física, 2006-06-01)
We theoretically study many-body excitations in three different quasi-one-dimensional (Q1D) electron systems: (i) those formed on the surface of liquid Helium; (ii) in two coupled semiconductor quantum wires; and (iii) Q1D ...
Intersubband excitations at finite temperatures and their roles in different quasi-one-dimensional systems
(Sociedade Brasileira de Física, 2006-06-01)
We theoretically study many-body excitations in three different quasi-one-dimensional (Q1D) electron systems: (i) those formed on the surface of liquid Helium; (ii) in two coupled semiconductor quantum wires; and (iii) Q1D ...
Partitioning technique procedure revisited II: Application to the Stark and Zeeman problems in light atoms
(1999)
We show that the modified partitioning procedure can be applied to study the spherical and nonspherical Stark effect in the hydrogen atom and the spherical quadratic Zeeman effect in H-, the helium atom and He‐like ions: ...
Summation of partial wave expansions in the scattering by long range potentials. II. Numerical applications
(1978-01-01)
The numerical application of a sequence transformation method proposed in a previous work is considered for the calculation of differential cross-sections corresponding to processes where long range interactions are ...