Precision Oscillator Strength and Lifetime Measurements

Determination of polarizabilities and lifetimes for the Mg, Zn, Cd and Hg isoelectronic sequences

The dipole polarizability and adiabatic correlations of atomic ions are related to the energy levels and oscillator strengths of the levels through bracketing inequalities. For systems with a ground state ns2 S0, the total oscillator strength is dominated by the unbranched intrashell ns2 S0–nsnp P1 transition, and the remaining oscillator strength can be narrowly bracketed using the f -sum rule...

SELECTED LIFETIME AND OSCILLATOR STRENGTH MEASUREMENTS IN Si II

We have remeasured the lifetimes of the 3s24s and levels in Si II using beam foil spectro3s25s 2S1@2 scopic techniques. Measured values for the lifetimes and oscillator strengths derived from them are presented and compared with previous measurements and theoretical calculations. Agreement with recent theoretical calculations is now quite good : for 3s24s it is excellent and for 3s25s it is sat...

بررسی ویژگیهای قدرت خط و نیروی نوسانگر اتمهای نقره و طلا با استفاده از نظریه تقریب کولنی

  Single-valence electron atoms are an important class of atoms. Their oscillator strengths are their important properties. Knowing the oscillator strengths one can easity calculate the transition probabilities of the spectral lines and hence the lifetimes of energy levels of most atoms. The oscillator strengths of the spectral lines of most atoms are not knoen with sufficient accuracy due to t...

Tradeoffs between oscillator strength and lifetime in terahertz quantum cascade lasers

The Effect of Structural Parameters on the Electronic States and Oscillator Strength of a Resonant Tunneling Quantum Well Infrared Photodetector

In this paper a resonant tunnelling quantum well infrared photodetector (RT-QWIP) is discussed. Each period of this photodetector structure comprises of a resonant tunnelling structure (AlAs/AlGaAs/AlAs) nearby a quantum well (AlGaAs/GaAs). In this photodetector, photocurrent is produced when an electron makes a transition from the ground state of the well to an excited state which is coupled t...