MULTIPHOTON PROCESSES IN OPEN ATMOSPHERE IN THE WAVELENGTH REGION 224-230 NM

Multiphoton processes in open laboratory air have been studied in the spectral range 224-230 nm using a simple 'open-to-the-atmosphere' ioni zation detector. A number of oxygen molecular (O2) and atomic (O) tran sitions have been identified in this region. It is pointed out that th is information is essential if multiphoton laser analytical techniques are applied in an open air regime as well as to predominantly air sam ples containing trace quantities of environmentally sensitive compound s.