New high-power laser facility PALS—prospects for laser–plasma 
research

Rus, B.; Rohlena, K.; Skála, J.; Králíková, B.; Jungwirth, K.; Ullschmied, J.; Witte, Klaus; Baumhacker, H.

doi:10.1017/s0263034699172045

Cited by 13 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formamide samples (Sigma Aldrich, molecular biology grade ≥99.5%) were frozen at 77 K and exposed to periodic laser impulses (15 pulses every 20 min) generated by the high performance PALS system (wavelength of 1315 nm, energy of 150 J, and a duration of 350 ps). This experiment was performed in the presence of millimeter-sized particles of the FeNi meteorite Campo del Cielo and nitrogen (Linde Gas, 99.9999%) as a buffer gas.…”

Section: Methodsmentioning

confidence: 99%

On the Road from Formamide Ices to Nucleobases: IR-Spectroscopic Observation of a Direct Reaction between Cyano Radicals and Formamide in a High-Energy Impact Event

et al. 2012

View full text Add to dashboard Cite

The formamide-based synthesis of nucleic acids is considered as a nonaqueous scenario for the emergence of biomolecules from inorganic matter. In the current study, we scrutinized the chemical composition of formamide ices mixed with an FeNi meteorite material treated with laser-induced dielectric breakdown plasma created in nitrogen buffer gas. These experiments aimed to capture the first steps of those chemical transformations that may lead to the formation of nucleobases during the impact of an extraterrestrial icy body containing formamide on an early Earth atmosphere. High-resolution FT-IR spectroscopy combined with quantum chemical calculations was used to analyze the volatile fraction of the products formed during such an event. We have found that the spectrum of the evaporated formamide ices is dominated by the spectral signatures of the dimeric form of formamide. Upon exposure to laser sparks, new well-defined bands appear in the spectrum centered at ~820, ~995, and ~1650 cm(-1). On the basis of quantum chemical calculations, these bands can be assigned to the absorptions of 2-amino-2-hydroxy-acetonitrile and to 2-amino-2-hydroxy-malononitrile, which are formed in a direct reaction between formamide and CN(•) radicals upon the high-energy impact event. We also show that there is an exergonic reaction route via these intermediates leading to diaminomaleonitrile, which is generally considered to play a key role in the synthesis of nucleobases.

show abstract

Section: Methodsmentioning

confidence: 99%

On the Road from Formamide Ices to Nucleobases: IR-Spectroscopic Observation of a Direct Reaction between Cyano Radicals and Formamide in a High-Energy Impact Event

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Laser-Induced Dielectric Breakdown (LIDB) Plasma and the Asterix Laser System. The high-energy laser PALS 25 is an iodine chemical laser with a wavelength of 1315 nm. Amplifiers that generate laser radiation by flash photolysis of isopropyliodide (C 3 F 7 I) are located along its 160 m optical path.…”

Section: Methodsmentioning

confidence: 99%

Laser Spark Formamide Decomposition Studied by FT-IR Spectroscopy

2011

View full text Add to dashboard Cite

High-resolution FT-IR spectroscopy was used for the analysis of the products of formamide dissociation using a high-energy Asterix laser. In the experiment, the detected products of the formamide LIDB dissociation were hydrogen cyanide, ammonia, carbon monoxide, carbon dioxide, nitrous oxide, hydroxylamine, and methanol. The molecular dynamics of the process was simulated with the use of a chemical model. The chemistry shared by formamide and the products of its dissociation is discussed with the respect to the formation of biomolecules.

show abstract

“…The Asterix facility was first built at MPQ Garching and completed in 1995. Asterix was moved to Prague and has been operational since September 2000 [130] . PALS operates at 1315 nm and has extremely narrow linewidths, 20 pm, making it unsuitable for direct short pulse operation.…”

Section: Opcpa Systemsmentioning

confidence: 99%

Petawatt class lasers worldwide

Danson

Hillier

Hopps

et al. 2015

High Pow Laser Sci Eng

480

318

View full text Add to dashboard Cite

The use of ultra-high intensity laser beams to achieve extreme material states in the laboratory has become almost routine with the development of the petawatt laser. Petawatt class lasers have been constructed for specific research activities, including particle acceleration, inertial confinement fusion and radiation therapy, and for secondary source generation (x-rays, electrons, protons, neutrons and ions). They are also now routinely coupled, and synchronized, to other large scale facilities including megajoule scale lasers, ion and electron accelerators, x-ray sources and z-pinches. The authors of this paper have tried to compile a comprehensive overview of the current status of petawatt class lasers worldwide. The definition of 'petawatt class' in this context is a laser that delivers >200 TW.

show abstract

New high-power laser facility PALS—prospects for laser–plasma research

Cited by 13 publications

References 0 publications

On the Road from Formamide Ices to Nucleobases: IR-Spectroscopic Observation of a Direct Reaction between Cyano Radicals and Formamide in a High-Energy Impact Event

On the Road from Formamide Ices to Nucleobases: IR-Spectroscopic Observation of a Direct Reaction between Cyano Radicals and Formamide in a High-Energy Impact Event

Laser Spark Formamide Decomposition Studied by FT-IR Spectroscopy

Petawatt class lasers worldwide

Contact Info

Product

Resources

About