Messung der Absorptionsoszillatorenstärken von OI-Linien im Vakuum-UV-Spektralbereich

1967 ◽  
Vol 22 (10) ◽  
pp. 1613-1615 ◽  
Author(s):  
G. Boldt ◽  
F. Labuhn
Keyword(s):  
Light Source ◽  
Transition Probability ◽  
Argon Plasma ◽  
Oscillator Strengths ◽  
Mixture Ratio ◽  
Cascade Arc

The absorption oscillator strengths of the 0I-lines at 1152, 1218, 1302, 1305, and 1306 Å are measured in emission. The light source for this purpose is a wall-stabilized cascade arc burning in an argon plasma into which a small quantity of oxygen is introduced. Normal-intensities are produced by the same source. The evaluation of particle-densities is carried out without assuming constancy of mixture ratio and knowledge of any transition probability.

Messung der Absorptionsoszillatorenstärken von CI-Multipletts im Bereich zwischen 1100 und 1800 Å

1963 ◽  
Vol 18 (10) ◽  
pp. 1107-1116 ◽  
Author(s):  
G. Boldt
Keyword(s):  
Light Source ◽  
Transition Probability ◽  
Argon Plasma ◽  
Wavelength Region ◽  
Oscillator Strengths ◽  
Mixture Ratio ◽  
Cascade Arc

The absorption-oscillator-strengths of 24 C I-multiplets in the wavelength-region from 1100 to 1800 Å are measured in emission. The light-source for this purpose is a wall-stabilized cascade arc burning in an argon plasma into which a small quantity of carbondioxyd is introduced. Normalintensities are produced by the same source. The evaluation of particle-densities is carried out without supposing constancy of mixture ratio and knowledge of any transition-probability.

Messung der Absorptionsoszillatorenstärken von NI-Multipletts am Kaskadenlichtbogen im Wellenlängenbereich zwischen 1000 und 1800 Å

1965 ◽  
Vol 20 (8) ◽  
pp. 998-1010 ◽  
Author(s):  
Franz Labuhn
Keyword(s):  
Light Source ◽  
Transition Probability ◽  
Oscillator Strengths ◽  
Mixture Ratio ◽  
Cascade Arc

The absorption oscillator strengths of 35 NI-multiplets between 1000 and 1800 A are measured in emission. The light source is a wall-stabilized cascade arc burning in definite argon-nitrogen mixtures. Normal-intensities are produced by the same source. The evaluation of particle densities is carried out without assuming constancy of mixture ratio and knowledge of any transition probability.

Messung der Oszillatorenstärken von SiI-, SiII-und SiIII-Linien im Wellenlangenbereich 1100 — 2600 Å und Vergleich des Vakuum-UV-Strahlungsnormals mit dem Kohlebogen

1969 ◽  
Vol 24 (6) ◽  
pp. 990-997
Author(s):  
W. Hofmann
Keyword(s):  
Light Source ◽  
Transition Probability ◽  
Wavelength Region ◽  
Calibration Method ◽  
Oscillator Strengths ◽  
Silicon Tetrafluoride ◽  
Full Agreement ◽  
Cascade Arc ◽  
Carbon Arc ◽  
Vacuum Uv

The oscillator strengths of 72 Si I-, Si II- and Si III-lines and multiplets in the wavelength region 1100 -2600 Å were measured in emission. The light source was a wall-stabilized arc burning in argon at atmopheric pressure into which small amounts of silicon tetrafluoride and fluorine were introduced. All oscillator strengths were measured relatively and then put on an absolute scale by using the value Anm = 1,64 · 108 sec-1 for the transition probability of the Si I-multiplet 2506 Å to 2528 Å. The vacuum-UV intensity calibration method using the central intensities of optically thick lines in the cascade arc was extended up to the wavelength 2516 Å. In this wavelength region it could be directly compared with the radiation of the anode crater of the carbon arc. Full agreement between these two intensity standards was found.

Messung der Absorptionsoszillatorenstärken von Ba-II Linien in den Spektralbereichen von 1400—2000 A und von 4100—4600 Å

1968 ◽  
Vol 23 (10) ◽  
pp. 1499-1507 ◽  
Author(s):  
Jürgen Von Specht
Keyword(s):  
Light Source ◽  
Particle Density ◽  
Transition Probability ◽  
Oscillator Strengths ◽  
Emission Lines ◽  
Cascade Arc ◽  
Carbon Arc

The oscillator strengths of 22 Ba-II emission lines were measured in the wavelength regions 1400—2000 Å and 4100—4600 A. The light source was a wall-stabilized cascade arc burning in argon, into which a small quantity of barium vapor was introduced. Standard intensities were produced by the central intensities of optically thick lines and by a carbon arc. The transition probability of the line Ba-II 4554 A, which is known with an accuracy of about 10%, was used to determine the particle density.

Messung der Absorptionsoszillatorenstärken von SI- und S II-Linien im Bereich zwischen 1100 und 2000 Å

1968 ◽  
Vol 23 (11) ◽  
pp. 1707-1716
Author(s):  
Dragutin Müller
Keyword(s):  
Light Source ◽  
Transition Probability ◽  
Oscillator Strengths ◽  
Mixture Ratio

The absorption oscillator strengths of 44 S I- and 9 S II-lines between 1100 and 2000 Å are measured in emission. The light source is a wall-stabilized arc burning in definite argon-SF6 mixtures. Normal-intensities are produced by the same source. The evaluation of particle densities is carried out without assuming constancy of mixture ratio and knowledge of any transition probability.

Messung der Absorptionsoszillatorenstärken von Cl I-Linien im Vakuum-UV-Bereich

1967 ◽  
Vol 22 (12) ◽  
pp. 2097-2101
Author(s):  
W. Hofmann
Keyword(s):  
Light Source ◽  
Atmospheric Pressure ◽  
Transition Probabilities ◽  
Particle Density ◽  
Wavelength Region ◽  
Oscillator Strengths ◽  
Arc Plasma ◽  
Cascade Arc

The absorption oscillator strengths of 10 Cl I-lines in the wavelength region 1100—1400 A were measured in emission. The light source was a wall-stabilized cascade arc burning in argon at atmospheric pressure. To measure the curve of growth, chlorine was introduced into the arc plasma in small, defined amounts. The central intensities of optically thick lines were used as intensity standards. The particle density was determined in two different ways, with identical results obtained. Both methods do not depend on the assumption of constancy of mixture ratios nor knowledge of any transition probabilities.

Characteristic quantities of a cascade arc used as a light source for spectroscopic techniques

1990 ◽  
Vol 1 (12) ◽  
pp. 1326-1332 ◽  
Author(s):  
A T M Wilbers ◽  
G M W Kroesen ◽  
C J Timmermans ◽  
D C Schram
Keyword(s):  
Light Source ◽  
Spectroscopic Techniques ◽  
Cascade Arc

Multiconfigurational Dirac–Fock energy levels and radiative rates for Ni XXI

2014 ◽  
Vol 92 (11) ◽  
pp. 1285-1296 ◽  
Author(s):  
Sunny Aggarwal ◽  
Nupur Verma ◽  
A.K. Singh ◽  
Narendra Singh ◽  
Rinku Sharma ◽  
...  
Keyword(s):  
Transition Probabilities ◽  
Transition Probability ◽  
Energy Levels ◽  
Oscillator Strengths ◽  
Fusion Plasmas ◽  
Transition Wavelength ◽  
Forbidden Transitions ◽  
New Energy ◽  
Atomic Structure Calculations ◽  
Structure Calculations

We present accurate atomic structure calculations for the lowest 200 fine structural energy levels for oxygen-like nickel, which may be a useful ion for both astrophysical and fusion plasmas. For the calculations of energy levels and radiative rates, we have used the multiconfigurational Dirac–Fock method. Our results are compared with those obtained using other numerical methods and experiments so that their accuracy can be assessed. The transition wavelengths, oscillator strengths, and radiative rates are reported for electric dipole (E1) transitions from the ground state. We have also presented the transition probabilities and transition wavelength of some forbidden transitions. Finally, we predict new energy levels, oscillator strengths, and transition probability data, where no other theoretical or experimental results are available, which may be useful for future experimental work.

scholarly journals Extending the capabilities of ablation harmonics to shorter wavelengths and higher intensity

2008 ◽  
Vol 26 (2) ◽  
pp. 235-240 ◽  
Author(s):  
T. Ozaki ◽  
L. Elouga Bom ◽  
R.A. Ganeev
Keyword(s):  
Light Source ◽  
Laser Plasma ◽  
Plasma Plume ◽  
Laser Light ◽  
Second Harmonic ◽  
Beam Line ◽  
High Order ◽  
Pump Laser ◽  
Oscillator Strengths ◽  
Laser Light Source

AbstractWe study the generation of high-order harmonics from plasma plume, by using the 20 TW, 10 Hz laser of the Advanced Laser Light Source (ALLS). We perform detailed studies on enhancement of single high-order harmonics generated in laser plasma using the fundamental and second harmonic of the ALLS beam line. Quasi-monochromatic harmonics are observed for Mn, Cr, Sb, Sn, and In plasmas. We identify most of the ionic/neutral transitions responsible for the enhancement, which all have strong oscillator strengths. Intensity enhancements of the 13th, 17th, 21st, 29th, and 33rd harmonics from these targets are demonstrated using the 800 nm pump laser and varying its chirp. We also observed harmonic enhancement from some targets for 400 nm pump laser. Using Mn plume, we demonstrated the highest harmonic photon energy (52.9 eV) at which enhancement has been observed (17th order, λ = 23.5 nm).

scholarly journals Electric dipole transition probabilities, oscillator strengths, and lifetimes for Co16+

2016 ◽  
Vol 94 (1) ◽  
pp. 23-25 ◽  
Author(s):  
G. Çelik ◽  
Ş. Ateş ◽  
G. Tekeli
Keyword(s):  
Electric Dipole ◽  
Transition Probabilities ◽  
Transition Probability ◽  
Energy Levels ◽  
Electric Dipole Transition ◽  
Dipole Transition ◽  
Oscillator Strengths ◽  
Coupling Scheme ◽  
Wbepm Theory ◽  
First Time

The electric dipole transition probabilities, oscillator strengths, and lifetimes for Co16+ have been calculated within the weakest bound electron potential model (WBEPM) theory using experimental energy levels and theoretical expectation values of orbital radii corresponding to those energy levels under the assumption of the LS coupling scheme. In the calculations both multiplet and fine structure transitions are studied. The present results are consistent with earlier results given in the literature. Moreover, some transition probability and oscillator strength values not existing in the literature are reported for the first time.

Sign in / Sign up

Export Citation Format

Share Document