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[object Object],[object Object],[object Object],[object Object],[object Object],ATOM

JJ. THOMSON ,[object Object],_ + + + + + + + + + + _ _ _ _ _ _ _ _ _ 2 x 10 -8 cm

ERNEST RUTHERFORD ,[object Object],[object Object],[object Object],+ -

NIELS BOHR ,[object Object],[object Object],2. Elektron 2 bergerak dlm lintasan stasioner tanpa memancarkan energi 3. Elektron dpt pindah dari satu ke lintasan lain sambil memancarkan atau menyerap energi berupa gel. elma sebesar n = bil kuantum dasar = kons Planck  6,626x10 -34 Js = Perbedaan energi ke-2 lintasan f = frek gel elma + _ _

I N T I ,[object Object],Jumlah proton (Z) sama dgn jumlah elektron Jumlah netron (N) Jumlah Nukleon A = Z + N atau Elektron - + Proton Netron X A Z X A Z

Jenis-jenis atom ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MUATAN DAN MASSA BAGIAN ATOM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RADIOAKTIF ,[object Object],[object Object],[object Object],[object Object]

SINAR ALFA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SINAR BETA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

NETRON ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],PROTON ,[object Object]

SINAR GAMMA ,[object Object],Inti mula 2 1,48 MeV ( 27 Co 60 ) Inti baru 1,31 MeV Inti 1,17 MeV Jika menembus lapisan materi setebal X maka intensitas akan berkurang Waktu paruh :

SINAR X ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A K Perbedaaan tegangan katoda dan anoda 20 KeV – 100 KeV

IONISASI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Radiasi Pengion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Hubungan antara rad dan Roentgen Rad = R x 0,87 x F, F = faktor yg nilainya tergantung pd enrgi radiasi 1 Rad = 2,58 x 10 -4 Coulomb/Kg udara

RBE ( Rad biological Effectiveness) ,[object Object],[object Object],[object Object],REM ( Rad Equivalent man ) Merupakan suatu unit untuk menyatakan banyaknya ekivalen dosis yg didefinisikan sebagai rad dikalikan faktor kualitas dr radiasi. Dosis dalam rem = dosis dlm rad x RBE Satuan rem diipakai dlm proteksi radiasi sedang RBE dlm radioteraphi

EFEK BIOLOGIS YG DITIMBULKAN OLEH RADIASI PENGION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],2. Efek genetik

EFEK SOMATIS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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