coatradio.py

Created by klfraimbow

Created on April 13, 2023

952 Bytes


Atome:
Pr: +e=1,6E-19C = E-27 kg
Ne: 0 C = E-27 kg
El: -e=-1,6E-19C = E-30 kg

A= nucleons  (pr+ne) / nb de masse
X= symbole / numero atomique 
Z= protons / nb de charge 

0Hr= 30Hf produits - 30Hf reactifs
0Hr < 0 exothermique

Isotopes = même Z(nb de charge) mais pas même A(nb de nucleon)

Lors dune desintegration radioactive
a ou B il y a conservation du nb de charge Z et du nb de nucleons A

a = 4He2
B-= 0e-1
B+= 0e+1 
proton = 1p1
neutron= 1n0

Y* -> Y + y(bizzare) 

-----

No = noyaux radioactifs a t=0 (date initiale)
N=No* e**-(lamnda*t)

24h:
N(24*60)=N(1440)= No * e**-(lamda* 1440)
jours:
N(x*1440)= No * e**-(lamda* (x*1440))  
Demie vie = t1/2 = ln2/lamnda = t(bizare)ln2
Lmanda = ln2/ t1/2

l'activite 1 d une source radioactive = nb moyen de desintergration par s dans $
lechantilon. En Bq becquerels 
1Bq = 1 desin par s 
A=Lmanda * N        ou  N= A/lamda 
 =A0* e**-(lamnda*t)


t= -1/lamda     *   ln(N/No)


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