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NUCLEAR CLOUD [9 records]

Record 1 2022-08-01

English

Subject field(s)
  • The Stars (Astronomy)
  • Space Physics
DEF

A stage in the evolution of a young star after it has fragmented from a gas cloud but before it has collapsed sufficiently for nuclear reactions to begin.

CONT

If the protostar can reach a temperature of 10 million degrees kelvin, the hydrogen fusion process will start and it will become an actual star.

Key term(s)
  • proto-star

French

Domaine(s)
  • Étoiles (Astronomie)
  • Physique spatiale

Spanish

Save record 1

Record 2 - external organization data 2021-03-18

English

Subject field(s)
  • Compartment – Nomenclature 4.0
  • Museums and Heritage (General)
OBS

cloud chamber : an item in the "Nuclear Physics Tools and Equipment" class of the "Tools and Equipment for Science and Technology" category.

French

Domaine(s)
  • Tiroir – Nomenclature 4.0
  • Muséologie et patrimoine (Généralités)
OBS

chambre à nuages : objet de la classe «Outils et équipement de physique nucléaire» de la catégorie «Outillage et équipement pour les sciences et la technologie».

Spanish

Save record 2

Record 3 2021-02-23

English

Subject field(s)
  • CBRNE Weapons
DEF

A cloud that rolls out from the bottom of the column produced by a subsurface burst of a nuclear weapon.

OBS

For underwater bursts the surge is, in effect, a cloud of liquid droplets which has the property of flowing almost as if it were a homogeneous fluid.

OBS

For subsurface land bursts the surge is made up of small solid particles but still behaves like a fluid.

OBS

base surge: designation and definition standardized by NATO.

French

Domaine(s)
  • Armes CBRNE
DEF

Nuage qui se dégage du bas de la colonne produite par l'explosion d'une arme nucléaire sous la surface du sol ou de l'eau.

OBS

Dans les explosions sousmarines, le nuage de base est, en fait un nuage de gouttelettes liquides qui a la propriété de se déplacer comme un fluide homogène.

OBS

Pour les explosions souterraines, le nuage de base est constitué de petites particules solides, mais se comporte comme un fluide.

OBS

nuage de base : désignation et définition normalisées par l'OTAN.

Spanish

Campo(s) temático(s)
  • Armas QBRNE
DEF

Nube que emana desde el fondo de la columna producida por la explosión subterránea de un arma nuclear.

OBS

En las explosiones subacuáticas la onda es, en realidad, una nube de diminutas gotas de agua que tiene la propiedad de deslizarse casi como si fuera un fluido homogéneo. En las explosiones subterráneas, la nube está compuesta por pequeñas partículas sólidas, pero también se comporta como un fluido.

Save record 3

Record 4 2020-02-22

English

Subject field(s)
  • Atomic Physics
  • CBRNE Weapons
DEF

A cloud of hot gases, smoke, dust and other particulate matter from a nuclear weapon and its environment, that is carried aloft in conjunction with the rise of the fireball produced by the detonation of that weapon.

OBS

nuclear cloud : designation and definition standardized by NATO.

French

Domaine(s)
  • Physique atomique
  • Armes CBRNE
DEF

Nuage de gaz chauds, de fumée, de poussières et d'autres particules provenant d'une arme nucléaire et de son environnement et qui est entraîné par la montée de la boule de feu produite par l'explosion de cette arme.

OBS

nuage nucléaire : désignation et définition normalisées par l'OTAN.

OBS

nuage nucléaire : désignation uniformisée par le Comité de terminologie française du Conseil de doctrine et de tactique de l'Armée de terre.

Spanish

Campo(s) temático(s)
  • Física atómica
  • Armas QBRNE
DEF

[Nube] de gases calientes, humo, polvo y otras partículas que proceden de la propia bomba nuclear y de su entorno, que ascienden junto con la bola de fuego producida por la explosión de un arma nuclear.

Save record 4

Record 5 2015-02-24

English

Subject field(s)
  • Atomic Physics
  • Radiological Physics (Theory and Application)
DEF

A cloud chamber containing air supersaturated with water vapor by sudden expansion, in which rapidly moving nuclear particles such as alpha or beta rays produced ionization tracks by condensation of vapor on the ions produced by the rays.

CONT

Cloud chambers were first developed by Charles T.R. Wilson around 1911 for experiments on the formation of rain clouds. Wilson knew that water vapour condensed around ions, atoms which have become charged by gaining or losing electrons. However, an alpha particle, for example, which had an electric charge, would leave a trail of ions as it passed through a gas. If water vapour condensed on these ions, the track of the alpha particle would become visible as a line of water droplets.

CONT

There are two basic types of cloud chambers in use today;(1) the expansion chamber... which depends upon expansion of the air, within the chamber, to cool it and thus create a supersaturated atmosphere, and(2) the continuous or diffusion type chamber..., that creates a supersaturated atmosphere by diffusion of vapor from the warm upper region of the chamber to the cooled bottom of the chamber. In both types, electrically charged ions created by nuclear particles colliding with atoms within the chamber atmosphere, serve as nuclei of condensation.

Key term(s)
  • Wilson chamber
  • cloud chamber of C.T.R. Wilson
  • expansion chamber of C.T.R. Wilson
  • expansion chamber

French

Domaine(s)
  • Physique atomique
  • Physique radiologique et applications
DEF

Chambre à nuage dans laquelle la sursaturation de la vapeur est obtenue pendant un court intervalle de temps par une détente rapide.

Key term(s)
  • chambre à nuage

Spanish

Campo(s) temático(s)
  • Física atómica
  • Física radiológica (Teoría y aplicación)
DEF

Recipiente, a menudo cilíndrico, dotado de una ventana transparente y de un pistón móvil que permite que el vapor de agua en el recipiente se expanda y se condense cuando la presión disminuye al ser desplazado el pistón hacia afuera.

Save record 5

Record 6 2014-01-17

English

Subject field(s)
  • CBRNE Operations
  • CBRNE Weapons
CONT

Nuclear attack indicators include : warning or threat of an attack or received intelligence, mushroom cloud, exceptionally large/powerful explosion, electromagnetic pulse(EMP).

French

Domaine(s)
  • Opérations CBRNE
  • Armes CBRNE
CONT

Les indicateurs d'attaques nucléaires comprennent les suivants : avertissement ou menace relative à une attaque ou tout renseignement reçu, champignon atomique, explosion exceptionnellement puissante ou importante, impulsion électromagnétique.

Spanish

Save record 6

Record 7 2013-11-14

English

Subject field(s)
  • Radioactive Contamination
  • CBRNE Operations
  • Risks and Threats (Security)
DEF

The precipitation to earth of radioactive particulate matter from a nuclear cloud.

OBS

fallout: term and definition officially approved by the Army Doctrine and Tactics Board.

OBS

radioactive fallout: term standardized by ISO.

OBS

radioactive fallout; radiation fallout; nuclear radioactive fallout: terms standardized by the Canadian Capability-Based Planning Terminology Committee and the Translation Bureau.

Key term(s)
  • radiation fall-out
  • nuclear radioactive fall-out

French

Domaine(s)
  • Pollution par radioactivité
  • Opérations CBRNE
  • Risques et menaces (Sécurité)
DEF

Processus de retombée à la surface de la terre de particules contaminées par les éléments radioactifs provenant d'un nuage atomique.

OBS

retombée radioactive; retombée : termes habituellement utilisés au pluriel.

OBS

retombée radioactive : terme et définition uniformisés par le Comité de terminologie française du Conseil de doctrine et de tactique de l'Armée de terre.

OBS

retombée radioactive : Le terme au pluriel (retombées radioactives) a été normalisé par l'ISO, ainsi que par le Comité de terminologie de la planification axée sur les capacités au Canada et le Bureau de la traduction.

Key term(s)
  • retombées radioactives
  • retombées

Spanish

Campo(s) temático(s)
  • Contaminación por radioactividad
  • Operaciones QBRNE
  • Riesgos y amenazas (Seguridad)
DEF

Precipitación sobre la tierra de partículas radiactivas procedentes de una nube nuclear [...]

OBS

[...] se aplica también a las propias partículas.

Save record 7

Record 8 2008-03-13

English

Subject field(s)
  • Fires and Explosions
  • CBRNE Weapons
CONT

Mushroom clouds are formed by many sorts of large explosions under earth gravity, though they are best known for their appearance after nuclear detonations.... While it rises, air is drawn into it and upwards(similar to the updraft of a chimney), producing strong air currents known as "afterwinds", while inside the head of the cloud the hot gases rotate in a toroid shape. When the detonation itself is low enough, these afterwinds will draw in dirt and debris from the ground below to form the stem of the mushroom cloud.

CONT

[Nuclear tests]. The rapid formation of the cloud was dramatic-the stem shot up into the air like the Geneva fountain, developed the typical mushroom head, and then seemed to penetrate it and keep on going.

French

Domaine(s)
  • Feux et explosions
  • Armes CBRNE
CONT

[Essais nucléaires]. Baker [explosion sous-marine] demeure à ce jour l'une des explosions les plus impressionnantes de par la masse d'eau projetée en l'air, la colonne atteignit plus de 2 kilomètres de haut et souleva ainsi plus d'un million de mètres cube d'eau.

Spanish

Save record 8

Record 9 1994-12-05

English

Subject field(s)
  • Nuclear Fission Reactors
CONT

A cooling tower basically consists of an air circuit and a water circuit leading to a heat exchange vessel in which the air and water are brought into contact. By a stack effect, i. e. by natural draft, the cooling tower shell provides air circulation. When, as is the case with the wet cooling towers at EDF thermal and nuclear plants, the air and water are placed in direct contact in the heat exchange vessel, the hot air escaping from the shell is saturated with steam : mixing with the colder outside air produces by steam condensation a plume whose structure is similar to a natural cloud.

French

Domaine(s)
  • Réacteurs nucléaires de fission
CONT

Lorsque, ce qui est le cas des réfrigérants humides équipant les centrales thermiques et nucléaires d'EDF, l'air et l'eau sont mis en contact direct dans le corps d'échange, l'air chaud qui s'échappe de la coque est saturé de vapeur d'eau : le mélange avec l'air ambiant, plus froid, produit, par condensation de la vapeur, un panache dont la structure s'apparente à celle d'un nuage naturel.

Spanish

Save record 9

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