Cairns, G.

Dwivedi, L.

Holden, P.

Key, M.H.

Kodama, R.

Krishnan, J.

Lewis, Ciaran

Lightbody, M.

Macphee, A.G.

Neely, D.

Norreys, P.

Oneill, D.M.

Pert, G.J.

Ramsden, S.A.

Tallents, G.J.

Uhomoibhi, J.O.

Zhang, J.

Queen's University Belfast Research Portal

NE-LIKE GE SLAB TARGET STUDIES CARRIED OUT AT RAL

The effect of non-uniform target illumination on the soft X-ray lasing output intensity of the J=2-1 Ne-like Ge transitions as a function of length was investigated. As the degree of nonunifonnity increased with length the Ne-like Ge 23.2 and 23.6 nm J=2-1 transitions did not show exponentiation of output intensity. Using an experimentally measured gain-intensity scaling relationship these results were modelled and good qualitative agreement obtained. The model indicates that for Ge targets which are non-uniformly illuminated, even with peak to valley ratios of up to 3 efficient operation can be achieved at between 2-3x threshold intensity. Further studies of the effect of increasing the separation between the two targets of a double target geometry are also presented

NE-LIKE GE SLAB TARGET STUDIES CARRIED OUT AT RAL

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Queen's University Belfast Research Portal

Queen's University Belfast Research Portal