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Bonn 2025 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 30: Molecular Spectroscopy and Theoretical Approaches

MO 30.4: Vortrag

Freitag, 14. März 2025, 15:15–15:30, HS XVI

Recent achievements and future prospects in precision spectroscopy of tritium-substituted molecules — •Valentin Hermann — Tritiumlabor Karlsruhe, Karlsruhe Institute for Technology, Karlsruhe, Germany

Precision spectroscopy of tritium-substituted molecules provides essential data for refining molecular energy models and supports applications in fusion research, where monitoring tritium-containing species is crucial. Recent advancements include high-resolution FTIR spectroscopy of tritiated water isotopologues (HTO, DTO, T2O), revealing over 4500 new absorption lines with accuracies up to 5.6 × 10−5 cm−1. NICE-OHMS (Noise-Immune Cavity-Enhanced Optical Heterodyne Molecular Spectroscopy) has also been applied to HT, achieving unprecedented spectral accuracy of 21 kHz.

Future projects aim to expand high-accuracy measurements to additional tritium-substituted species and to systematically improve line intensities for enhanced spectroscopic databases. The planned investigation of tritiated methane will support fusion research by enabling more accurate detection and monitoring of tritiated hydrocarbons, which are critical for fuel cycle control.

Keywords: Tritium; High-precision spectroscopy; Radioctivity

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