Abstract
Changes in sound pressure wave forms by operating flash lamps were studied. In the experiments, two types of lamp were prepared, one of which emitted vacuum ultraviolet (VUV) light and the other did not. We investigated the position of the sound pressure origination, the frequency component, and the relation between the degree of sound pressure and the surrounding atmosphere. It was found that there are two kinds of frequency components in the exploding sound, due to the significant sound pressure. One is an audible frequency component originated from light radiated from the lamp, and the other is the higher frequency component of a nonaudible sound, caused by the mechanical vibration of the flash lamp tube. The audible sound was generated as follows: Oxygen and water vapor absorb VUV light, water vapor absorbs infrared light which is a part of the spectrum of the flash lamp, and heating occurs. Consequently air rapidly expands and generates sound pressure. We propose that sound pressure in operating flash lamps could be strongly reduced by controlling the surrounding atmosphere.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
