Abstract

Absolute optical oscillator strengths of the Lyman and Werner bands of molecular deuterium are determined by a $\mathrm{dipole}(\ensuremath{\gamma},\ensuremath{\gamma}$) method with the high energy resolution of 25 meV. A comprehensive comparison shows that an excellent agreement between the present experimental results and the earlier theoretical calculations is achieved for both Lyman and Werner bands. In addition, the electronic transition dipole moments of ${\mathrm{D}}_{2}$ are derived. The absolute optical oscillator strengths of the Lyman and Werner bands of ${\mathrm{D}}_{2}$ reported in this work can serve as the benchmark to test calculations with different theoretical models and calculational codes and, also, be used in thermonuclear fusion plasma and other fields.

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