Hohlraum

From Glossary of Meteorology



hohlraum

An experimental source of blackbody radiation in the form of an isothermal cavity with a small opening.

The walls of the cavity are partially reflective and are kept at constant temperature, maintaining radiative equilibrium within the cavity. A hohlraum is also a perfect absorber since it traps all radiation that enters the small aperture.


Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.