Nanosecond pulse width dependence of nonphotochemical laser-induced nucleation of potassium chloride

Martin R. Ward, Iain Ballingall, Matthew L. Costen, Kenneth G. McKendrick, Andrew J. Alexander

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The effect of laser pulse width on the efficiency of nonphotochemical laser-induced nucleation (NPLIN) of supersaturated aqueous solutions of KCl has been studied. At equivalent peak-power densities it was observed that the same fractions of samples were nucleated for both short (6 ns) and long (200 ns) near-infrared laser pulses. The results show that the efficiency depends on the peak-power density and not on the duration, or total energy, of the laser pulses. It is concluded that the mechanism is unlikely to be based solely on diffusion of solute to a sub-critical cluster.
LanguageEnglish
Pages25-28
Number of pages4
JournalChemical Physics Letters
Volume481
Issue number1-3
DOIs
Publication statusPublished - 19 Oct 2009

Fingerprint

potassium chlorides
Potassium Chloride
Laser pulses
pulse duration
Nucleation
nucleation
Lasers
radiant flux density
lasers
Infrared lasers
pulses
infrared lasers
solutes
aqueous solutions
energy

Keywords

  • nonphotochemical laser-induced nucleation
  • NPLIN
  • near-infrared laser pulses

Cite this

Ward, Martin R. ; Ballingall, Iain ; Costen, Matthew L. ; McKendrick, Kenneth G. ; Alexander, Andrew J. / Nanosecond pulse width dependence of nonphotochemical laser-induced nucleation of potassium chloride. In: Chemical Physics Letters. 2009 ; Vol. 481, No. 1-3. pp. 25-28.
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Nanosecond pulse width dependence of nonphotochemical laser-induced nucleation of potassium chloride. / Ward, Martin R.; Ballingall, Iain; Costen, Matthew L.; McKendrick, Kenneth G.; Alexander, Andrew J.

In: Chemical Physics Letters, Vol. 481, No. 1-3, 19.10.2009, p. 25-28.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nanosecond pulse width dependence of nonphotochemical laser-induced nucleation of potassium chloride

AU - Ward, Martin R.

AU - Ballingall, Iain

AU - Costen, Matthew L.

AU - McKendrick, Kenneth G.

AU - Alexander, Andrew J.

PY - 2009/10/19

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N2 - The effect of laser pulse width on the efficiency of nonphotochemical laser-induced nucleation (NPLIN) of supersaturated aqueous solutions of KCl has been studied. At equivalent peak-power densities it was observed that the same fractions of samples were nucleated for both short (6 ns) and long (200 ns) near-infrared laser pulses. The results show that the efficiency depends on the peak-power density and not on the duration, or total energy, of the laser pulses. It is concluded that the mechanism is unlikely to be based solely on diffusion of solute to a sub-critical cluster.

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KW - nonphotochemical laser-induced nucleation

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