The region of interaction between a focused 1 GW ruby laser beam and a plane beryllium target has been observed end-on with a high resolution stigmatic grazing incidence spectrograph. The profile of the Lyα line of BeIV is made up of two components : a broad asymmetric one, spatially corresponding to the radiation emitted by the high density ablation region and a narrow one superimposed, emitted by the expanding plasma. A model that solves the radiative transfer equation for a moving plasma with adjustable parameters reproduces very well the observed features. It is then possible to determine a unique and realistic set of plasma parameters in good agreement with previous independent observations.
Titolo: | Parameters of a Laser-Produced Plasma from XUV Line Profiles |
Autori: | |
Data di pubblicazione: | 1982 |
Rivista: | |
Abstract: | The region of interaction between a focused 1 GW ruby laser beam and a plane beryllium target has been observed end-on with a high resolution stigmatic grazing incidence spectrograph. The profile of the Lyα line of BeIV is made up of two components : a broad asymmetric one, spatially corresponding to the radiation emitted by the high density ablation region and a narrow one superimposed, emitted by the expanding plasma. A model that solves the radiative transfer equation for a moving plasma with adjustable parameters reproduces very well the observed features. It is then possible to determine a unique and realistic set of plasma parameters in good agreement with previous independent observations. |
Handle: | http://hdl.handle.net/11577/2508313 |
Appare nelle tipologie: | 01.01 - Articolo in rivista |