Characterization of germanium stripe x-ray lasers

Alan S. Wan; Juan C. Moreno; Brian J. MacGowan; Stephen B. Libby; Jeffrey A. Koch; Joseph Nilsen; Albert L. Osterheld; James H. Scofield; James E. Trebes; Rosemary S. Walling

doi:10.1117/12.172898

1 July 1994 Characterization of germanium stripe x-ray lasers

Alan S. Wan, Juan C. Moreno, Brian J. MacGowan, Stephen B. Libby, Jeffrey A. Koch, Joseph Nilsen, Albert L. Osterheld, James H. Scofield, James E. Trebes, Rosemary S. Walling

Author Affiliations +

Optical Engineering, Vol. 33, Issue 7, (July 1994). https://doi.org/10.1117/12.172898

Abstract

One method of improving the transverse spatial coherence of x-ray lasers (XRLs) is by adaptive spatial filtering of XRL apertures using geometric shaping in the form of bowtie or wedge XRLs. However, we must maintain the desired geometric shapes in exploding foil or slab configurations during the lasing period. As a first step toward understanding lasing in such geometries, we study the behavior of simple stripe XRLs. Past experience with stripe XRLs deposited on thick plastic substrates resulted in significantly weaker laser intensities as compared to line-focused slab XRLs. Possible reasons for this intensity reduction of stripe XRLs could include mixing at the laser boundary, and changes in plasma, kinetics, and hydrodynamic properties that affect laser gains and propagation. We present experimental and theoretical characterizations of germanium line-focused slab and stripe XRLs. Key experimental parameters we are studying include images of emission profiles of the laser blowoff, angular divergences, XRL output intensities, and ionization balances as we vary XRL designs. We compare the experimental results with 2-D laser deposition and hydrodynamics simulations using LASNEX, and study the changes in ionization balances and level populations from postprocessing LASNEX results.

Citation Download Citation

Alan S. Wan, Juan C. Moreno, Brian J. MacGowan, Stephen B. Libby, Jeffrey A. Koch, Joseph Nilsen, Albert L. Osterheld, James H. Scofield, James E. Trebes, and Rosemary S. Walling "Characterization of germanium stripe x-ray lasers," Optical Engineering 33(7), (1 July 1994). https://doi.org/10.1117/12.172898

Published: 1 July 1994

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available