<i>Handbook for Theoretical Computation of Line Intensities in Atomic Spectra</i>

Levinson, I. B.; Никитин, А. А.; Mendlowitz, H.

doi:10.1063/1.3047868

Cited by 8 publications

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“…The weak lines give only small contribution to the total line strength of the spectrum, therefore this quantity can be used as the integral characteristic of the intensive group of lines. The total line strength of the transitions of type (2) obtains the following expressions [21]:…”

Section: Results and Their Discussionmentioning

confidence: 99%

Integral characteristics of spectra of ions important for EUV lithography

Karazija¹,

Kučas²,

Momkauskaitė³

2006

J. Phys. D: Appl. Phys.

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The emission spectrum corresponding to the 4p54dN+1 + 4p64dN–14f → 4p64dN transition array is concentrated in a narrow interval of wavelengths. That is due to the existence of an approximate selection rule and quenching of some lines by configuration mixing. Thus such emission of elements near Z = 50 is considered to be the main candidate for the EUV lithography source at λ = 13.5 nm. In the present work the regularities of these transition arrays are considered using their integral characteristics: average energy, total line strength, variance and interval of array containing some part of the total transition probability. Calculations for various ions of elements In, Sn, Sb, Te, I and Xe have been performed in a two-configuration pseudorelativistic approximation, which describes fairly well the main features of the spectra. The variation in the values of the main integral characteristics of the spectra with atomic number and ionization degree gives the possibility of comparing quantitatively the suitability of the emission of various ions for EUV lithography.

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Section: Results and Their Discussionmentioning

confidence: 99%

Integral characteristics of spectra of ions important for EUV lithography

Karazija¹,

Kučas²,

Momkauskaitė³

2006

J. Phys. D: Appl. Phys.

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“…Notwithstanding the fact that the theory and the practice for the calculation of elementary and statistical radiative properties of low temperature plasma and hot gases have been developing for more than a half century [9][10][11][12][13], the development of reliable spectral optical models for radiative gas dynamics and heat transfer application is still an issue. Modern computing technologies give new methods for improvement of calculations [14,15].…”

Section: Asteroid and Earth Atmosphere Entry Plasmamentioning

confidence: 99%

Radiation Models and Radiation Transfer in Hypersonics

Perrin¹,

Colonna²,

Ammando³

et al. 2014

TOPPJ

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The paper presents radiation models developed to investigate radiation in entry in Earth, Mars and Jupiter atmospheres. The capacity of ASTEROID computing code to simulate elementary radiative processes, calculate spectral and groups optical properties, and also solve simple radiative heat transfer problems is presented for Earth entry. The large number of radiative processes involved in the radiative flux is put forward. The contributions of the different radiative processes encountered in Mars entry are studied using the HTGR spectroscopic database. The validity of this database with respect to diatomic molecules systems and CO 2 infrared radiation is illustrated through experimental validations. The accuracy of statistical narrow-band model to predict radiative flux is illustrated for an afterbody. Finally recent improvements of the model developed for the calculation of radiative properties of high-temperature H 2 /He mixtures representative of Jupiter atmosphere is presented. The model takes into account the most important radiative processes.

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“…where H is the Hamiltonian, 1 ðKÞ " E EðKÞ is the average energy of configuration K and gðKÞ is the statistical weight of the configuration (number of states). The summation in (1), ( 2) is performed over all states of configuration K: These formulae are written for the intermediate coupling, though their values due to the principle of spectroscopic stability do not depend on the coupling scheme [16].…”

Section: Global Characteristics Of Energy Level Spectra In the Relati...mentioning

confidence: 99%

Global Characteristics of Atomic Spectra and Their Use for the Analysis of Spectra. V. Relativistic Effects within an Open Shell

Jonauskas¹,

Kučas²,

Karazija³

2003

Phys. Scr.

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We have successfully synthesized Sr 2 V 1−x Mo x O 4 from x = 0.3 to 1.0 by an improved process. The layered compound Sr 2 VO 4 is an antiferromagnetic insulator with S = 1/2, while the isostructural Sr 2 MoO 4 is a Pauli paramagnetic metal. The solid solution Sr 2 V 1−x Mo x O 4 of these materials is expected to show a metal-insulator transition. In this paper we report the synthetic process and the results of the magnetic susceptibility and the electrical resistivity. The selection of the starting materials and the adjustment of O 2 partial pressure of less than 10 −12 atm were indispensable for the synthesis. The reducing conditions during the sintering had been determined rationally, according to thermodynamical analysis. Kondo-like behavior in both resistivity and magnetic susceptibility were observed in a limited range of V-containing samples.

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Handbook for Theoretical Computation of Line Intensities in Atomic Spectra

Cited by 8 publications

References 0 publications

Integral characteristics of spectra of ions important for EUV lithography

Integral characteristics of spectra of ions important for EUV lithography

Radiation Models and Radiation Transfer in Hypersonics

Global Characteristics of Atomic Spectra and Their Use for the Analysis of Spectra. V. Relativistic Effects within an Open Shell

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