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ERIC Number: EJ1354882
Record Type: Journal
Publication Date: 2022-Jul
Pages: 7
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-9120
EISSN: EISSN-1361-6552
Vibrational Spectroscopy in Materials
Thompson, Frank
Physics Education, v57 n4 Article 045030 Jul 2022
An absorption line at 900 nm has been observed in Perspex. Samples of 1 and 2 cm thickness were used and the integrated absorption (line width times peak absorption) of the line was proportionate to the thickness. Facilities for lowering the sample temperature were not available and therefore both measurements were carried out at room temperature. A Red Tide spectrophotometer was used to measure this absorption. According to the Optics Group at National Institute of Standards and Technology, USA, the line can be assigned to the "3rd overtone CH stretch of the methyl and methylene group." The present result was compared with historic data for boron impurities in indium phosphide to demonstrate the versatility of this form of spectroscopy.
IOP Publishing. 190 North Independence Mall West Suite 601, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: ped@ioppublishing.org; Web site: https://iopscience.iop.org/journal/0031-9120
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A