A3 Fisika Inti Malik

Fisika Inti dan Radioaktivitas Oleh: Malik Huda (Kelas XII IPA)

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Halaman Utama: Fisika Inti dan Radioaktivitas ( 5 subbab) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur I nti ,[object Object],[object Object],[object Object],[object Object]

1. Simbol Atom X ,[object Object],[object Object],[object Object],[object Object],*Catatan: Satuan massa dalam inti atom adalah sma = amu (atomic mass unit) 1 sma =

2. Bagian Inti Atom ,[object Object],[object Object],[object Object]

3. Nuklida ,[object Object],[object Object],[object Object],[object Object]

4. Partikel yang Dipancarkan Unsur Radioaktif ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stabilitas Inti ,[object Object],[object Object],[object Object],[object Object],[object Object]

Defek Massa dan Energi Ikat ,[object Object],[object Object]

1. Defek Massa ,[object Object],Δm = Z. m p + (A-Z) m n – m inti Δm = defek massa (sma) Z = nomor atom m p = massa satu proton n = A-Z = jumlah neutron m n = massa satu neutron m inti = massa inti

2. Energi Ikat ,[object Object],E = Δm c 2 atau E=Δm x 931 ,5 MeV Bila Δm dalam kg maka E dalam Joule Bila Δm dalam sma maka E dalam MeV 1sma = 931 ,5 MeV (mega elektron volt) 1eV = 1,6 . 10-19 Joule

Radioaktivitas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

1. Pengertian Radioaktivitas ,[object Object],[object Object],[object Object],[object Object]

Sinar- α ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sinar - β ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sinar-γ ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2. Intensitas Sinar Radioaktif ,[object Object],I = Io . e Io = intensitas mula-mula I = intensitas setelah melewati keping x = tebal keping μ = koefisien pelemahan Agar I = Io, maka ketebalan keping x, yang disebut juga half value layer (HVL) yaitu: x=

3. Alat-alat Pendeteksi Sinar Radioaktif ,[object Object],[object Object],[object Object],[object Object]

4. Peluruhan Zat Radioaktif (Desintegrasi) ,[object Object],N= No . e No = jumlah inti mula-mula N = jumlah inti yang belum meluruh λ = konstanta peluruhan (1/sekon) t = lama meluruh (sekon)

5. Waktu Paruh = T ,[object Object],T= atau N = No dengan n= T= waktu paruh t = lamanya berdesintegrasi

6. Aktivitas Radioaktif ,[object Object],R = λN -> R = Ro Ro = λNo R = aktivitas radioaktif Satuan aktivitas = 1 Curie = 3,7.10 10 partikel/detik (Becquerel) 1 Rutherford (Rd) = 10 Becquerel

Reaksi Inti ,[object Object],[object Object],[object Object]

1. Reaksi ,[object Object],[object Object],[object Object]

2. Macam-macam Reaksi Inti ,[object Object],[object Object],[object Object]

Radioaktivitas alam ,[object Object]

Penembakan Inti Aatom ,[object Object],[object Object],[object Object],[object Object],[object Object]

Transmutasi Inti ,[object Object],[object Object]

Radioaktivitas Buatan ,[object Object]

Reaksi Fisi ,[object Object],[object Object]

Reaksi Berantai ,[object Object],[object Object],[object Object],[object Object]

Reaksi Fusi ,[object Object],[object Object],[object Object],[object Object]

3. Penerapan (Reaktor Atom) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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