| Title | Temperature and temporal dependence of neutral density transmittance standards |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Koo, A., and Hamlin J.D. |
| Journal | Metrologia |
| Volume | 49 |
| Issue | 2 |
| Pagination | S68 - S72 |
| Date Published | 2012 |
| ISSN | 00261394 (ISSN) |
| Keywords | Engineering, Manufacture, Metallurgical engineering, Neutral densities, Spectral transmittance, temperature dependence, Temporal dependence |
| Abstract | The Schott series of NG glasses are frequently used to manufacture neutral density transmittance standards for validation of spectrophotometer systems as well as for comparisons of regular spectral transmittance scales. A study has been made of the temperature and temporal dependence of transmittance in these types of filters. The temperature dependence of transmittance is found to scale as -ln(T). The filter transmittance was found to vary significantly with time shortly after manufacture but appears to be stabilizing nine months after beginning measurements. © 2012 BIPM & IOP Publishing Ltd. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84857989474&partnerID=40&md5=c5320d4d05d3a47907592cdb52b7062d |
| DOI | 10.1088/0026-1394/49/2/S68 |
