Les Unités utilisées en Rad Flashcards

1
Q

QU’EST CE QUE L’ACTIVITE

A

NOMBRE DE DESINTEGRATION PAR UNITE DE TEMPS AU SEIN D’UNE MATIERE RADIOACTIVE

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2
Q

QUELLE EST L’UNITE DE L’ACTIVITE

A

LE BECQUEREL

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3
Q

COMMENT SE NOTE LE BECQUEREL

A

Bq

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4
Q

GIGA =10^

A

10^9

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5
Q

TERA =10^

A

10^12

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6
Q

MEGA=10^

A

10^6

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7
Q

KILO=10^

A

10^3

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8
Q

DEFINITION DE LA PERIODE

A

TEMPS AU BOUT DUQUEL LA SOURCE A PERDU LA MOITIE DE SON ACTIVITE

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9
Q

AU BOUT DE COMBIEN DE PERIODES UN ELEMENT EST CONSIDERE COMME NON RADIOACTIF

A

10 FOIS SA PERIODE

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10
Q

FORMULE CALCUL DOSE ABSORBEE

A

D = Ḋ . t

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11
Q

FORMULE CALCUL NOMBRE DE PERIODES ECOULEES

A

n = 𝒕/𝑻
T PERIODE DU RADIOELEMENT
t TEMPS ECOULE DEPUIS FABRICATION

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12
Q

FORMULE DE CALCUL ACTIVITE A L’INSTANT t

A

At = 𝑨𝟎/𝟐^𝒏

n NOMBRE DE PERIODES ECOULEES

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13
Q

FORMULE DE CALCUL DU DEBIT DE DOSE PAR RAPPORT A LA DISTANCE

A

Ḋx.dx^2=Ḋy.dy^2

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14
Q

QUELLE EST L’UNITE DE LA DOSE ABSORBEE

A

Gy

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15
Q

DEFINITION DE LA DOSE ABSORBEE

A

QUANTITE D’ENERGIE ABSORBEE PAR UNITE DE MASSE

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16
Q

MILI =10^

A

10^-3

17
Q

MICRO =10^

A

10^-6

18
Q

NANO=10^

A

10^-9