noun
femtosecond chemistry; femtochemistry
A branch of physical chemistry that studies chemical reactions on the femtosecond timescale, often using ultrafast laser spectroscopy.
フェムト秒化学は、化学反応の超高速過程を観測する分野です。
Femtosecond chemistry is a field that observes ultrafast processes in chemical reactions.
From フェムト (femto-, 10⁻¹⁵) + 秒 (second) + 化学 (chemistry), a calque of English 'femtosecond chemistry'.