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Mass selection in laser-plasma ion accelerator on nanostructured surfaces

Dalui, Malay LU ; Kundu, Mondira; Sarkar, Subhrangsu; Tata, Sheroy; Pasley, John; Ayyub, P. and Krishnamurthy, Malathi (2017) In Physics of Plasmas 24(1).
Abstract

When an intense laser pulse interacts with a solid surface, ions get accelerated in the laser-plasma due to the formation of transient longitudinal electric field along the target normal direction. However, the acceleration is not mass-selective. The possibility of manipulating such ion acceleration scheme to enhance the energy of one ionic species (either proton or carbon) selectively over the other species is investigated experimentally using nanopore targets. For an incident laser intensity of approximately 5×1017 W/cm2, we show that the acceleration is optimal for protons when the pore diameter is about 15-20 nm, while carbon ions are optimally accelerated when the pore diameter is close to 40-50 nm. The observed effect... (More)

When an intense laser pulse interacts with a solid surface, ions get accelerated in the laser-plasma due to the formation of transient longitudinal electric field along the target normal direction. However, the acceleration is not mass-selective. The possibility of manipulating such ion acceleration scheme to enhance the energy of one ionic species (either proton or carbon) selectively over the other species is investigated experimentally using nanopore targets. For an incident laser intensity of approximately 5×1017 W/cm2, we show that the acceleration is optimal for protons when the pore diameter is about 15-20 nm, while carbon ions are optimally accelerated when the pore diameter is close to 40-50 nm. The observed effect is due to tailoring targetry by the pulse pedestal of the laser prior to the arrival of the main pulse.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics of Plasmas
volume
24
issue
1
publisher
American Institute of Physics
external identifiers
  • scopus:85009737806
  • wos:000395395100003
ISSN
1070-664X
DOI
10.1063/1.4973887
language
English
LU publication?
yes
id
eb77c6ff-3275-4283-8cf3-b8b5482c5a10
date added to LUP
2017-02-27 08:26:25
date last changed
2018-06-10 05:16:32
@article{eb77c6ff-3275-4283-8cf3-b8b5482c5a10,
  abstract     = {<p>When an intense laser pulse interacts with a solid surface, ions get accelerated in the laser-plasma due to the formation of transient longitudinal electric field along the target normal direction. However, the acceleration is not mass-selective. The possibility of manipulating such ion acceleration scheme to enhance the energy of one ionic species (either proton or carbon) selectively over the other species is investigated experimentally using nanopore targets. For an incident laser intensity of approximately 5×1017 W/cm<sup>2</sup>, we show that the acceleration is optimal for protons when the pore diameter is about 15-20 nm, while carbon ions are optimally accelerated when the pore diameter is close to 40-50 nm. The observed effect is due to tailoring targetry by the pulse pedestal of the laser prior to the arrival of the main pulse.</p>},
  articleno    = {010703},
  author       = {Dalui, Malay and Kundu, Mondira and Sarkar, Subhrangsu and Tata, Sheroy and Pasley, John and Ayyub, P. and Krishnamurthy, Malathi},
  issn         = {1070-664X},
  language     = {eng},
  month        = {01},
  number       = {1},
  publisher    = {American Institute of Physics},
  series       = {Physics of Plasmas},
  title        = {Mass selection in laser-plasma ion accelerator on nanostructured surfaces},
  url          = {http://dx.doi.org/10.1063/1.4973887},
  volume       = {24},
  year         = {2017},
}