Iodine laser production of highly charged Ta ions

Láska, L.; Krása, J.; Mašek, K.; Pfeifer, M.; Králíková, B.; Mocek, Tomáš; Skála, J.; Straka, P.; Trenda, P.; Rohlena, K.; Woryna, E.; Farny, J.; Parys, P.; Wołowski, J.; Mróz, W.; Shumshurov, A.; Sharkov, B.; Collier, J.; Langbein, K.; Haseroth, H.

doi:10.1007/bf01690039

Cited by 37 publications

(27 citation statements)

References 20 publications

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“…This result is in agreement with the literature, which predicts a charge state of about 50+ by using a laser fluence of about four order magnitudes higher [11].…”

Section: Resultssupporting

confidence: 94%

Non-equilibrium plasma production by pulsed laser ablation of gold

Torrisi

Gammino

Andò

2003

Radiation Effects and Defects in Solids

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A gold target has been irradiated with a Q-switched Nd:Yag laser having 1064 nm wavelength, 9 ns pulse width, 900 mJ maximum pulse energy and a maximum power density of the order of 10 10 W/cm 2 . The laser-target interaction produces a strong gold etching with production of a plasma in front of the target. The plasma contains neutrals and ions having a high charge state. Time-of-flight (TOF) measurements are presented for the analysis of the ion production and ion velocity. A cylindrical electrostatic deflection ion analyzer permits measurement of the yield of the emitted ions, their charge state and their ion energy distribution. Measurements indicate that the ion charge state reaches 6 + and 10 + at a laser fluence of 100 J/cm 2 and 160 J/cm 2 , respectively. The maximum ion energy reaches about 2 keV and 8 keV at these low and high laser fluences, respectively. Experimental ion energy distributions are given as a function of the ion charge state. Obtained results indicate that electrical fields, produced in the plume, along the normal to the plane of the target surface, exist in the unstable plasma. The electrical fields induce ion acceleration away from the target with a final velocity dependent on the ion charge state. The ion velocity distributions follow a "shifted Maxwellian distribution", which the authors have corrected for the Coulomb interactions occurring inside the plasma.

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“…This result is in agreement with the literature, which predicts a charge state of about 50+ by using a laser fluence of about four order magnitudes higher [11].…”

Section: Resultssupporting

confidence: 94%

Non-equilibrium plasma production by pulsed laser ablation of gold

Torrisi

Gammino

Andò

2003

Radiation Effects and Defects in Solids

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show abstract

“…This result is in agreement with literature, which predicts a charge state of about 50þ by using a laser fluence of about four order magnitude higher [11]. The vertical scale of Figure 4 is different for the three spectra; it is multiplied by a factor 3.0, 1.5 and 1.0 for the 50, 100 and 160 J=cm 2 fluence, respectively.…”

Section: Resultssupporting

confidence: 91%

Non-equilibrium plasma production by pulsed laser ablation of gold

Torrisi

Gammino

Andò

2002

Radiation Effects and Defects in Solids

View full text Add to dashboard Cite

A gold target has been irradiated with a Q-switched Nd:Yag laser having 1064 nm wavelength, 9 ns pulse width, 900 mJ maximum pulse energy and a maximum power density of the order of 10 10 W=cm 2 . The laser-target interaction produces a strong gold etching with a production of a plasma in front of the target. The plasma contains neutrals and ions having high charge state. Time-of-flight measurements are presented for the analysis of the ion production and ion velocity. A cylindrical electrostatic deflection ion analyzer permits to measure the yield of the emitted ions, their charge state and their ion energy distribution. Measurements indicate that the ion charge state reaches 6 þ and 10 þ at a laser fluence of 100 J=cm 2 and 160 J=cm 2 , respectively. The maximum ion energy reaches about 2 keV and 8 keV at these low and at high laser fluence, respectively. Experimental ion energy distributions are given as a function of the ion charge state. Obtained results indicate that electrical fields, produced in the plume, along the normal to the plane of the target surface, exist in the unstable plasma. The electrical fields induce ion acceleration away from the target with a final velocity dependent on the ion charge state. The ion velocity distributions follow a ''shifted Maxwellian distribution'', which the authors have corrected for the Coulomb interactions occurring inside the plasma.

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“…The plasma diagnostics in BNL are based on Faraday Cup (FC) and Ion Energy Analyser (IEA) both in Time of Flight (TOF) configuration [7]. Thanks to FC, located at 2.4 m away from the target, we can get the first informations on laser-generated plasma, like the maximum ion energy and the yield of plasma.…”

Section: Faraday Cup and Ion Energy Analysermentioning

confidence: 99%

Ion energy distributions from laser-generated plasmas at two different intensities

Ceccio¹,

Torrisi²,

Okamura

et al. 2018

EPJ Web of Conferences

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Abstract. Laser-generated non-equilibrium plasmas were analyzed at Brookhaven National Laboratory (NY, USA) and MIFT Messina University (Italy). Two laser intensities of 10 12 W/cm 2 and 10 9 W/cm 2 , have been employed to irradiate Al and Al with Au coating targets in high vacuum conditions. Ion energy distributions were obtained using electrostatic analyzers coupled with ion collectors. Time of flight measurements were performed by changing the laser irradiation conditions. The study was carried out to provide optimum keV ions injection into post acceleration systems. Possible applications will be presented.

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Iodine laser production of highly charged Ta ions

Cited by 37 publications

References 20 publications

Non-equilibrium plasma production by pulsed laser ablation of gold

Non-equilibrium plasma production by pulsed laser ablation of gold

Non-equilibrium plasma production by pulsed laser ablation of gold

Ion energy distributions from laser-generated plasmas at two different intensities

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