| Title | Realization of a photometric scale based on cryogenic radiometry |
| Publication Type | Journal Article |
| Year of Publication | 1998 |
| Authors | Clare, J.F., and Nield K.M. |
| Journal | Metrologia |
| Volume | 35 |
| Issue | 4 |
| Pagination | 251 - 254 |
| Date Published | 1998 |
| ISSN | 00261394 (ISSN) |
| Abstract | A standard of illuminance responsivity has been realized on a set of photopically-corrected detectors. It is based on the use of a cryogenic radiometer for the measurement of radiant power in terms of electrical standards and on a spectral responsivity scale established on silicon photodiodes in a "trap" configuration to evaluate the photopic response of the detectors. The spectral responsivity of the photometers was obtained from the trap detector by comparison using a spectrophotometer beam which underfilled both. The spatial responsivity of the photometers was found to be non-uniform by up to 1% and this is a significant source of uncertainty in the realization. The measurements of aperture area used visual identification of the edges and were corrected for a bias in the visual technique that was demonstrated by checks with a similar-sized ring gauge robust enough for contact measurement. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0006408046&partnerID=40&md5=e7efc32c6d942ce00fd25a4b817310df |
| DOI | 10.1088/0026-1394/35/4/6 |
