A series of experiments are carried out by current modulating a tunable diode laser, and
slowly ram** the wavelength to scan weak absorption lines in gases at pressures ranging …

Radiocarbon (C 14) concentrations at a 43 parts-per-quadrillion level are measured by
using saturated-absorption cavity ringdown spectroscopy by exciting radiocarbon-dioxide (C …

Monitoring of radiocarbon (C14) in carbon dioxide is demonstrated using mid-infrared
spectroscopy and a quantum cascade laser. The measurement is based on cavity ring-down …

There are currently no suitable methods for sensitive automated in situ monitoring of
gaseous radiocarbon, one of the main sources of radioactive gas emissions from nuclear …

A cavity ring-down spectroscopy (CRDS) instrument was developed using mature, robust
hardware for the measurement of carbon-14 in biological studies. The system was …

In-situ monitoring of radiocarbon emissions is challenging due to the lack of a suitable
method for sensitive online detection of this isotope. Here we report on a complete system …

This review summarizes recent developments in radiocarbon tracer technology and
applications. Technologies covered include accelerator mass spectrometry (AMS), including …

New therapeutic biological entities such as bispecific antibodies targeting tissue or specific
cell populations form an increasingly important part of the drug development portfolio …

Measurements of ratios of stable isotopes are used in such diverse fields as petroleum
prospecting, medical diagnostics, and planetary exploration. The narrow emission linewidth …

The infrared spectrum of the rare isotopologue has been investigated in the range 2190–
2250 cm− 1 with a frequency-comb-referenced cavity ring-down spectrometer. Thirty-three …