R
R.J. Clarke
Researcher at Rutherford Appleton Laboratory
Publications - 22
Citations - 1204
R.J. Clarke is an academic researcher from Rutherford Appleton Laboratory. The author has contributed to research in topics: Laser & Proton. The author has an hindex of 15, co-authored 22 publications receiving 1147 citations. Previous affiliations of R.J. Clarke include University of Strathclyde.
Papers
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Journal ArticleDOI
Scaling of proton acceleration driven by petawatt-laser-plasma interactions
L. Robson,P. T. Simpson,R.J. Clarke,R.J. Clarke,Kenneth W. D. Ledingham,Filip Lindau,Olle Lundh,T. McCanny,P. Mora,David Neely,Claes-Göran Wahlström,Matthew Zepf,Paul McKenna +12 more
TL;DR: In this paper, the authors extend the energy and intensity range over which proton scaling is experimentally investigated, up to 400 J and 6×10^20 Wcm−2 respectively, and find a slower proton scale than previously predicted.
Journal ArticleDOI
Laser generation of proton beams for the production of short-lived positron emitting radioisotopes
I. Spencer,Kenneth W. D. Ledingham,Ravi P. Singhal,T. McCanny,Paul McKenna,E.L. Clark,Karl Krushelnick,Matthew Zepf,Farhat Beg,Michael Tatarakis,A. E. Dangor,Peter Norreys,R.J. Clarke,Ric M. Allott,I. Ross +14 more
TL;DR: In this article, the possibility of using ultra-intenseense lasers to produce commercial amounts of short-lived positron emitting sources for positron emission tomography (PET) is discussed.
Journal ArticleDOI
High power laser production of short-lived isotopes for positron emission tomography
Kenneth W. D. Ledingham,Paul McKenna,T. McCanny,S. Shimizu,S. Shimizu,J. M. Yang,L. Robson,Jamal Zweit,James Gillies,James Bailey,G N Chimon,R.J. Clarke,David Neely,Peter Norreys,John Collier,Ravi P. Singhal,Mingsheng Wei,Stuart Mangles,P. M. Nilson,Karl Krushelnick,Matthew Zepf +20 more
TL;DR: In this article, the authors describe how to generate PET sources of 11C, 13N, 15O and 18F using a petawatt laser beam and the potential for developing compact laser technology for this purpose is discussed.
Journal ArticleDOI
Demonstration of fusion-evaporation and direct-interaction nuclear reactions using high-intensity laser-plasma-accelerated ion beams
Paul McKenna,Kenneth W. D. Ledingham,Kenneth W. D. Ledingham,T. McCanny,Ravi P. Singhal,I. Spencer,M. I. K. Santala,Farhat Beg,Karl Krushelnick,Michael Tatarakis,Mingsheng Wei,E.L. Clark,R.J. Clarke,Kate Lancaster,Peter Norreys,K. M. Spohr,R. Chapman,Matthew Zepf +17 more
TL;DR: Heavy-ion induced nuclear reactions in materials exposed to energetic ions produced from high-intensity laser-solid interactions have been experimentally investigated for the first time.
Journal ArticleDOI
Laser-driven photo-transmutation of 129I—a long-lived nuclear waste product
Kenneth W. D. Ledingham,J. Magill,Paul McKenna,J. M. Yang,J. Galy,R Schenkel,J Rebizant,T. McCanny,S. Shimizu,L. Robson,Ravi P. Singhal,Mingsheng Wei,Stuart Mangles,P. M. Nilson,Karl Krushelnick,R.J. Clarke,Peter Norreys +16 more
TL;DR: In this paper, the authors reported the laser-driven photo-transmutation of long-lived 129 I with a half-life of 15.7 million years to 128 I with an integrated cross-section of 97±40 mbarns.