3. UV laser ablation extraction
Laser ablation uses the energy of photons with wavelengths in the ultraviolet (UV) range (100 nm < λ < 400 nm) to ablate rather than fuse matter by breaking bonds. Two laser families exist in this wavelength range: excimers (exited dimer ), where the lasing effect is obtained with the energy transitions permitted with a rare gas dimer (Ar 2 , Kr 2 , Xe 2 ), and exciplexes, (excited complex ), where the same phenomenon is obtained but from a complex composed of a rare gas atom (Ne, Ar, Kr or Xe) and a halogen (F, Cl, Br).
Although increasingly used in research laboratories, this technique remains a complex operation where a large number of parameters have an impact on the quality of...
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Unit operations. Chemical reaction engineering
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UV laser ablation extraction
Analytical results
Bibliography
Events
Development In Noble Gas Understanding and Expertise (DINGUE). Workshop organized each year in conjunction with the GOLDSCHIMDT conference.
Standards and norms
- CF flange connection elements: the elements are made of 316 L stainless steel [DIN 17 440 – WN 14 404) Z2CND17-12] and DIN 28 403 - « Pneurop » 6601 - 1981
- Cuivre OFHC (Oxygen Free High Conductivity ): Cuivre élaboré suivant une méthode américaine. Son équivalent français est le cuivre Cu-c1 ou 2 - ISO431 -
Patents
ZIMMERMANN (L.), PIK (R.). – High-temperature furnace under ultra-high vacuum. [patent FR 2973105(A1)] (2011).
ZIMMERMANN (L.). – Furnace and process for extraction by diffusion of helium present in minerals. [patent no. 1 000185860] (2013).
Directory
Manufacturers – Producers – Suppliers (non-exhaustive list)
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Ultra-high vacuum equipment (CF flange, translation and electrical bushing, copper gasket, etc.)
Adixen Vacuum Products SAS (Pfeiffer) http://www.pfeiffer-vacuum.com
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