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X ray focusing using microchannel plates. Part 2 : experiments

Technical Report:

Abstract

A microchannel plate (MCP) detector blank has been used to focus x rays of wavelength 0.154, 0.62, and 0.84 mm generated by a micro-focus x ray tube and a laser-produced plasma. The focusing effect of MCPs arises from total external reflection of x rays at the interior channel surfaces. Measurements of the intensity profiles of the images formed by the MCP have been made and compared with the predictions of a detailed model developed in a previously permitted paper. It was found that the model, which incorporates effects due to surface roughness, multiple reflections, channel misalignments, and finite source and collector sizes, gives a good description of the data. A consistent set of parameters was found from fits to the data at all three wavelengths. The channels of the MCP appear to be extremely regular, although the surfaces exhibited roughness which was estimated to have an RMS height variation of 16 {+-}1 nm and an autocorrelation length of 130 {+-}20nm. 13 refs., 7 figs.
Authors:
Chapman, H N; Nugent, K A; [1]  Rode, A; Luther-Davies, B; [2]  Wilkins, S W [3] 
  1. Melbourne Univ., Parkville (Australia). School of Physics
  2. Australian National Univ., Canberra (Australia). Plasma Research Lab.
  3. Commonwealth Scientific and Industrial Research Organization, Melbourne (Australia). Div. of Materials Science
Publication Date:
Dec 01, 1991
Product Type:
Technical Report
Report Number:
UM-P-91/31
Reference Number:
SCA: 430303; PA: AIX-23:005446; SN: 91000615804
Resource Relation:
Other Information: PBD: [1991]
Subject:
43 PARTICLE ACCELERATORS; BEAM OPTICS; ALIGNMENT; X-RAY TUBES; FOCUSING; EXPERIMENTAL DATA; LASER-PRODUCED PLASMA; PLATES; SURFACE PROPERTIES; 430303; EXPERIMENTAL FACILITIES AND EQUIPMENT
Sponsoring Organizations:
Australian Research Council, Canberra, ACT (Australia)
OSTI ID:
10102449
Research Organizations:
Melbourne Univ., Parkville, VIC (Australia). School of Physics
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE92611805; TRN: AU9112341005446
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
22 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Chapman, H N, Nugent, K A, Rode, A, Luther-Davies, B, and Wilkins, S W. X ray focusing using microchannel plates. Part 2 : experiments. Australia: N. p., 1991. Web.
Chapman, H N, Nugent, K A, Rode, A, Luther-Davies, B, & Wilkins, S W. X ray focusing using microchannel plates. Part 2 : experiments. Australia.
Chapman, H N, Nugent, K A, Rode, A, Luther-Davies, B, and Wilkins, S W. 1991. "X ray focusing using microchannel plates. Part 2 : experiments." Australia.
@misc{etde_10102449,
title = {X ray focusing using microchannel plates. Part 2 : experiments}
author = {Chapman, H N, Nugent, K A, Rode, A, Luther-Davies, B, and Wilkins, S W}
abstractNote = {A microchannel plate (MCP) detector blank has been used to focus x rays of wavelength 0.154, 0.62, and 0.84 mm generated by a micro-focus x ray tube and a laser-produced plasma. The focusing effect of MCPs arises from total external reflection of x rays at the interior channel surfaces. Measurements of the intensity profiles of the images formed by the MCP have been made and compared with the predictions of a detailed model developed in a previously permitted paper. It was found that the model, which incorporates effects due to surface roughness, multiple reflections, channel misalignments, and finite source and collector sizes, gives a good description of the data. A consistent set of parameters was found from fits to the data at all three wavelengths. The channels of the MCP appear to be extremely regular, although the surfaces exhibited roughness which was estimated to have an RMS height variation of 16 {+-}1 nm and an autocorrelation length of 130 {+-}20nm. 13 refs., 7 figs.}
place = {Australia}
year = {1991}
month = {Dec}
}