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Natuurkunde kernfysica v3.xls
Kernfysica
Examenstof VWO * HAVO ^
* ^
Aantal nucleonen in kern
A = N + Z
* ^
Einstein
E = m c
2
A
[-]
=
E
[J]
=
N
[-]
=
m
[kg]
=
Z
[-]
=
*
Vervalconstante
λ = (1 / τ ) ln 2
*
Activiteit
A (t) = - ΔN (t) / Δt
λ
[s
-1
]
=
A (t)
[s
-1
]
=
τ
[s]
=
ΔN (t)
[-]
=
Δt
[s]
=
*
Activiteit
A (t) = λ N (t)
A (t)
[s
-1
]
=
λ
[s
-1
]
=
N (t)
[-]
=
radioactief verval
N (t) = N (0) e
(-λt)
*
radioactief verval
N (t) = N (0) (1/2)
(1/τ)
N (t)
[-]
=
N (t)
[-]
=
N (0)
[-]
=
N (0)
[-]
=
λ
[s
-1
]
=
τ
[s]
=
t
[s]
=
radioactief verval
A (t) = A (0) e
(-λt)
radioactief verval
A (t) = A (0) (1/2)
(1/τ)
A (t)
[s
-1
]
=
A (t)
[s
-1
]
=
A (0)
[s
-1
]
=
A (0)
[s
-1
]
=
λ
[s
-1
]
=
τ
[s]
=
t
[s]
=
Verzwakkingscoë
fficiënt
μ
= (ln 2) / d
1/2
μ
[m
-1
]
=
d1/2 = halveringsdikte
d
1/2
[m]
=
Verzwakking
γ
-
straling
I (x) = I (0) e
(-μx)
*
Verzwakking
γ
-
straling
I (x) = I (0) (1/2)
(x/d
1/2
)
I (x)
[J s
-1
m
-2
]
=
I (x)
[J s
-1
m
-2
]
=
I (0)
[J s
-1
m
-2
]
=
I (0)
[J s
-1
m
-2
]
=
μ
[m
-1
]
=
x
[m]
=
x
[m]
=
d
1/2
[m]
=
* ^
Dosis
D = E
str
/ m
* ^
Effectieve dosis
H = Q D
D
[Gy]
=
H
[Sv]
=
Estr
[J]
=
Q
[-]
=
m
[kg]
=
D
[Gy]
=
