Helmholtz Resonance Cell for Gas Phase Photoacoustic Studies

dc.contributor.author	Ajith Prasad, K. C
dc.contributor.author	Nampoori, V. P. N
dc.contributor.author	Vallabhan, C. P. G
dc.date.accessioned	2005-01-11T09:27:03Z
dc.date.available	2005-01-11T09:27:03Z
dc.date.issued	1991
dc.identifier.citation	Kodaikanal Observatory Bulletins Series A, Vol. 11, pp. 33-37	en
dc.identifier.issn	0374-3632
dc.identifier.uri	http://hdl.handle.net/2248/214
dc.description.abstract	The design and frabication of a Helmholtz type gas phase photoacoustic cell are described. The cell which incorporates a miniature microphone (Knowles B.T.1759) along with a matching pre-amplifier is very sensitive and can detect very weak signals. The system can be effectively used for the study of overtone spectroscopy of molecules in gas phase and it is suitable for both intracavity and extracavity modes of operation. The working of the cell is illustrated by recording overtone photoacoustic spectrum of Toluene in the extracavity mode using a Ring dye Laser. Variation of the amplitude and phase of photoacoustic signal with modulating frequency are also studied along with the dependence of photoacoustic signal with laser power	en
dc.format.extent	97508 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en
dc.publisher	Indian Institute of Astrophysics, Bangalore	en
dc.subject	Helmholtz resonance cell	en
dc.subject	Intracavity mode	en
dc.subject	Extracavity mode	en
dc.subject	Photoacoustic spectroscopy	en
dc.title	Helmholtz Resonance Cell for Gas Phase Photoacoustic Studies	en
dc.type	Article	en