Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
First HED experiment at XFEL

Professor Justin Wark

Professor of Physics

Sub department

  • Atomic and Laser Physics

Research groups

  • Oxford Centre for High Energy Density Science (OxCHEDS)
Justin.Wark@physics.ox.ac.uk
Telephone: 01865 (2)72251
Clarendon Laboratory, room 029.9
  • About
  • Publications

X-ray laser radiography of hydrodynamic perturbations due to laser imprint

INST PHYS CONF SER 159 (1999) 657-663

Authors:

E Wolfrum, JS Wark, J Zhang, N O'Rourke, R Keenan, CLS Lewis, AG MacPhee, D Kalantar, MH Key, BA Remington, D Neely, A Djaoui, SJ Rose, G Eker, J Lin, R Smith, GJ Tallents

Abstract:

Extreme ultraviolet (XUV) laser radiography is a technique that allows the investigation of hydrodynamic perturbations with high spatial and temporal resolution. A Ne-like Ge XUV laser with wavelength lambda = 19.6 nm was used as a backlighter for 2 pm thick Al foils, and a Ni-like Sm XUV laser at lambda = 7.3 nm for 2 pm thick CH foils. The imprinted modulation and growth due to a low intensity (I = 5.0(12) to 1.5.10(13) W/cm(2)) 0.53 mu m drive beam incident on the thin foils has been determined. Smoothing techniques were used to minimise the optical perturbations, and the growth rates for the different smoothing schemes are compared. Moreover, single mode perturbation with I = 15, 30, 70 and 90 mu m wavelengths have been investigated to gain better insight into the physical processes of imprinting. XUV laser radiography is also suitable to determine the change in opacity for shock compressed materials. For the investigated conditions, the opacity of Al increases by a factor of 1.4 to 1.6, depending on the drive intensity.
More details

A multi-channel soft X-ray flat-field spectrometer

AIP Conference Proceedings AIP Publishing (1998) 479-484

Authors:

D Neely, D Chambers, C Danson, P Norreys, S Preston, F Quinn, M Roper, J Wark, M Zepf
More details from the publisher

Laser induced nuclear reactions

AIP Conference Proceedings AIP Publishing (1998) 229-234

Authors:

Ken Ledingham, Tom McCanny, Paul Graham, Xiao Fang, Ravi Singhal, Joe Magill, Alan Creswell, David Sanderson, Ric Allott, David Neely, Peter Norreys, Marko Santala, Matthew Zepf, Ian Watts, Eugene Clark, Karl Krushelnick, Michael Tatarakis, Bucker Dangor, Antonin Machecek, Justin Wark
More details from the publisher

Measurement of single mode imprint in laser ablative drive of a thin Al foil by extreme ultraviolet laser radiography

Physics of Plasmas AIP Publishing 5:1 (1998) 227-233

Authors:

E Wolfrum, J Wark, J Zhang, D Kalantar, MH Key, BA Remington, SV Weber, D Neely, S Rose, J Warwick, A MacPhee, CLS Lewis, A Demir, J Lin, R Smith, GJ Tallents
More details from the publisher

Optimizing harmonics from solid targets

AIP Conference Proceedings AIP Publishing (1998) 264-269

Authors:

M Zepf, G Pretzler, U Andiel, DM Chambers, AE Dangor, PA Norreys, JS Wark, I Watts, GD Tsakiris
More details from the publisher

Pagination

  • First page First
  • Previous page Prev
  • …
  • Page 61
  • Page 62
  • Page 63
  • Page 64
  • Current page 65
  • Page 66
  • Page 67
  • Page 68
  • Page 69
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet