TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

FOAM SPOT [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2010-03-01

English

Subject field(s)
  • Atomic Physics
  • Nuclear Fission Reactors
CONT

Improved uniformity of the laser for-al spot profile is a necessary criterion for the success of high intensity laser fusion and to improve the quality of data from moderate intensity laser driven shock experiments in solids. Recently developed laser smoothing techniques rely on both temporal smoothing and thermal smoothing to produce uniform ablation pressures on the target surface. Thermal smoothing is not effective during the low intensity portion of a laser pulse and the resultant shock structure mirrors the residual laser nonuniformities. The impact of the first(nonuniform) shock can be diminished by using foam layers, a precursor flash, shallow angles of incidence, and by adiabatically compressing the target with a temporally long, slowly rising laser pulse.

French

Domaine(s)
  • Physique atomique
  • Réacteurs nucléaires de fission
CONT

[...] il faut au départ et au cours de l'impulsion réaliser une interface aussi régulière que possible. Les irrégularités restantes ne pourront être qu'amplifiées au cours du temps (d'autres effets comme le lissage thermique viennent un peu atténuer le propos).

Spanish

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Record 2 2000-10-25

English

Subject field(s)
  • Paper Manufacturing Processes
DEF

On the surface of coated paper, small spots, often crater shaped, generally associated with air bubbles which have been entrained in the liquid coating colour when applied to the base sheet.

French

Domaine(s)
  • Fabrication du papier
DEF

Tache de la surface du papier ayant l'aspect d'un cratère. Elle provient de la présence d'une bulle d'air dans la pâte ou dans la sauce de couchage. Les points de mousse sont généralement groupés, alignés dans le sens machine.

Spanish

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Record 3 2000-10-18

English

Subject field(s)
  • Paper Manufacturing Processes
DEF

Discoloured spot on the web transferred from the calender roll, due e. g. to foam or grease.

French

Domaine(s)
  • Fabrication du papier

Spanish

Save record 3

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