Abstract

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 spectroscopy, and a high sensitivity is achieved with a simple setup. The instrument was tested using a standardized sample containing elevated levels of radiocarbon. Radiocarbon dioxide could be detected from samples with an isotopic ratio C14/C as low as 50 parts-per-trillion, corresponding to an activity of 5kBq/m3 in pure CO2, or 2Bq/m3 in air after extraction of the CO2 from an air sample. The instrument is simple, compact, and robust, making it the ideal tool for on-site measurements. It is aimed for monitoring radioactive gaseous emissions in a nuclear power environment, during the operation and decommissioning of nuclear power plants. Its high sensitivity also makes it the ideal tool for the detection of leaks in radioactive waste repositories.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Pulsed quantum cascade laser-based cavity ring-down spectroscopy for ammonia detection in breath

Jagadeeshwari Manne, Oleksandr Sukhorukov, Wolfgang Jäger, and John Tulip
Appl. Opt. 45(36) 9230-9237 (2006)

Theory of saturated-absorption cavity ring-down: radiocarbon dioxide detection, a case study

G. Giusfredi, I. Galli, D. Mazzotti, P. Cancio, and P. De Natale
J. Opt. Soc. Am. B 32(10) 2223-2237 (2015)

Optical interruption of a quantum cascade laser for cavity ring-down spectroscopy

Teemu Kääriäinen and Guillaume Genoud
Opt. Lett. 44(21) 5294-5297 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription