Photoionization cross sections for the trans-iron element Se + from 18 to 31 eV

Absolute photoionization cross-section calculations are presented for Se + using large-scale close-coupling calculations within the Breit--Pauli and Dirac--Coulomb R -matrix approximations. The results from our theoretical work are compared with recent measurements (Esteves 2010 PhD Thesis publication number AAI3404727, University of Reno, NV, USA; Sterling et al 2011 J. Phys. B: At. Mol. Opt. Phys. 44 025701; Esteves et al 2011 Phys. Rev. A 84 013406) made at the advanced light source (ALS) radiation facility in Berkeley, CA, USA. We report on results for the photon energy range 18.0--31.0 eV, which spans the ionization thresholds of the 4 S o 3/2 ground state and the low-lying 2 D o 5/2,3/2 and 2 P o 3/2,1/2 metastable states. Metastable fractions are inferred from our present work. Resonance energies and quantum defects of the prominent Rydberg resonances series identified in the spectra are compared for the 4p → n d transitions with the recent ALS experimental measurements made on this complex trans-iron element.

Experimental and theoretical photoionization cross sections for Se + from 18 eV to 31 eV

Absolute Se photoionization cross-section measurements and Dirac-Coulomb R -matrix calculations are reported for the photon energy range 18.0 eV – 31.0 eV, which spans the ionization thresholds of the 4 S 0 3/2 ground state and the low-lying 2 D 0 3/2,5/2 and 2 P 0 1/2,3/2 metastable states. The determination of the photoionization and recombination properties of n -capture element ions is motivated by their astrophysical detection and the importance of their elemental abundances in testing theories of nucleosynthesis and stellar structure.

Age of pending criminal cases report for period 7/1/2013 thru 5/31/2014

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Summary of Pending Common Pleas Cases by Circuit/County For Period 7/1/2014 thru 8/31/2014

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Criminal Records Summary of Activity by Circuit/County For Period 7/1/2014 Thru 8/31/2014

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Preserving southern history material : an address before the Southern Club of Columbia University, July 31, 1923

This publication is a short address made by William H. Kilpatrick to the Southern Club of Columbia University calling on Southerners to gather and preserve their own history.

Compilation of Periodic Histories from 1 April 1979 to 31 December 1989

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Remonstrance of the citizens of Beaufort District, S.C. against any further increase of the duties on imports, December 31, 1827

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Young Composers, May 31, 1990

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New Music by Young Composers, performed by Members of the Contemporary Group, May 31, 1978

Concert Program for New Music by Young composers, performed by Members of the Contemporary Group, May 31, 1978

Unesp Ciência, 2012, ano 3, número 31

Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP