oscillator strengthsの例文

• Hence, excitons bound to impurities and defects possess giant oscillator strength.
• Where f _ { nk } are oscillator strengths for quantum transitions between the states n and k.
• The only drawback of f-f transitions are their faint oscillator strengths which may in fact be turned into an advantage.
• Shallow impurity-exciton states are working as antennas borrowing their giant oscillator strength from vast areas of the crystal around them.
• High oscillator strength results in low-power optical saturation and radiative life times \ tau _ i \ approx 500 ps.
• Giant oscillator strengths of impurity excitons endow them with ultra-short radiational life-times \ tau _ i \ sim1 ns.
• In CdS, with E _ i \ approx6 meV, were observed impurity-exciton oscillator strengths f _ i \ approx 10.
• The first largely complete set of oscillator strengths of singly ionized iron-group elements were made available in the 1960s, and these were subsequently improved.
• This lithium oscillator strength is related to the radiative lifetime of atomic lithium and is used as a benchmark for atomic clocks and measurements of fundamental constants.
• According to closed-orbit theory, the average oscillator strength density at constant \ epsilon is given by a smooth background plus an oscillatory sum of the form
• The addition of the moiety to the sidewall of the nanotube disrupts the oscillator strength that gives rise to RBM feature and hence causes decay of these features.
• This started with the spectra of dilute solutions in which the giant oscillator strength of impurity excitons was identified and the position of lower energy band of crystalline naphthalene was established.
• For high enough densities, all E _ \ lambda energies correspond to continuum states and some of the oscillators strengths may become negative-valued due to the Pauli-blocking effect.
• In the landmark work, the C 3 value for atomic lithium was determined to a higher-precision than any atom's previously measured oscillator strength, by an order of magnitude.
• This simple result reflects physics of the phenomenon of "'giant oscillator strength "': coherent oscillation of electron polarization in the volume of about a _ i ^ 3 > > v.
• Impurities can bind excitons, and when the bound state is shallow, the oscillator strength for producing bound excitons is so high that impurity absorption can compete with intrinsic exciton absorption even at rather low impurity concentrations.
• If the charge, \ scriptstyle { e }, is omitted from the electric dipole operator during this calculation, one obtains \ scriptstyle { \ mathbf { R } _ \ alpha } as used in oscillator strength.
• Where \ hbar \ omega is the probe-photon energy, F _ \ lambda is the oscillator strength of the exciton state \ lambda, and \ gamma _ \ lambda is the dephasing constant associated with the exciton state \ lambda.
• The oscillator strength f _ i for producing a bound exciton can be expressed through its wave function \ Psi _ i ( \ boldsymbol { r } _ e, \ boldsymbol { r } _ h ) and f _ { \ rm ex } as
• Anomalously high intensity of the impurity-exciton lines indicate their giant oscillator strength of about f _ i \ sim10 per impurity center while the oscillator strength of free excitons is only of about f _ { \ rm ex } \ sim10 ^ {-4 } per unit cell.