Zobrazeno 1 - 10
of 15
pro vyhledávání: '"K P M Rishad"'
Publikováno v:
New Journal of Physics, Vol 17, Iss 2, p 023033 (2015)
Intense laser-produced plasma is a complex amalgam of ions, electrons and atoms both in ground and excited states. Little is known about the spatial composition of the excited states that are an integral part of most gaseous or cluster plasma. In clu
Externí odkaz:
https://doaj.org/article/8add088c5e234b74869650dc60fe1a4a
Publikováno v:
New Journal of Physics, Vol 15, Iss 4, p 043036 (2013)
Intense laser fields are known to induce strong ionization in atoms. In nanoclusters, ionization is only stronger, resulting in very high charge densities that lead to Coulomb explosion and emission of accelerated highly charged ions. In such a stron
Externí odkaz:
https://doaj.org/article/99bab98d8a3049e0ada2fa8cf4f87174
Publikováno v:
Journal of Materials Science: Materials in Electronics. 33:24506-24518
Autor:
E. Krishnakumar, V. Narayanan, M. Krishnamurthy, K. P. M. Rishad, T. Madhu Trivikram, R. Rajeev
Publikováno v:
Nature Physics. 9:185-190
A megaelectronvolt beam of atoms is now generated by ionizing argon clusters, and then neutralizing the ions using Rydberg atoms. The compact system demonstrates a high neutral yield, and could find an important application as a sensitive probe of ma
Publikováno v:
Physical Review A. 91
Publikováno v:
Optics Express
We experimentally study the spectral broadening of intense, ∼ 100 femtosecond laser pulses at 785 nm coupled into different kinds of hollow core capillary fibers, all filled with air at ambient pressure. Differently from observations in other gases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db164305d2b049791265055c9f8c63b8
https://eprints.soton.ac.uk/361851/
https://eprints.soton.ac.uk/361851/
Publikováno v:
CLEO: 2014.
Nanoclusters are strongly ionised at 1016 Wcm−2 to generate even MeV ions. In a dense cluster ensemble a near 100% charge reduction of the ions to form fast neutrals is demonstrated. Neutrals atom emission is quasi-directional and neutralisation is
Publikováno v:
Physical Review A. 87
Publikováno v:
Physical review letters. 111(14)
In nearly all the intense laser experiments with nanoclusters, the key observation has been that immense ionization drives highly charged ions to highest energies while low charge ions, if any, have lower kinetic energies. We show experimental measur
Autor:
M. Krishnamurthy, K. P. M. Rishad, Thomas Brabec, R. Rajeev, V. Narayanan, T. Madhu Trivikram
Publikováno v:
Physical Review A. 85
Ion emissions from clusters in intense ultrashort laser fields have been studied predominantly using time-of-flight (TOF) spectroscopy so far. Assuming atomic ion emission, arrival time signal is converted to a charge-integrated kinetic-energy spectr