Nuclear Reaction

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Nuclear Reaction により Mind Map: Nuclear Reaction

1. Nuclear Radiation

1.1. Alpha Particle

1.1.1. A high energy particle that contains 2 protons and 2 neutrons.

1.2. Beta Particle

1.2.1. A high energy electron formed when a neutron is converted to a proton and an electron.

1.3. Positron

1.3.1. It is called "ante particle" of a beta particle since their charges are different but their masses are the same.

1.4. Gamma Rays

1.4.1. High energy radiation released from a radioactive nucleus. They have no masses nor charge.

2. Radioactive Isotopes

2.1. An unstable and spontaneously emits energy from a more stable nucleus.

2.2. Radioactivity

2.2.1. The radioactivity is measured using a small portable device filled with Argon gas that is ionized when it comes into contact with nuclear radiation.

2.2.2. Units Cuire (Ci) Becquerel (Bq) Disintegration / second

3. Nuclear Fusion

3.1. The joining together of two light nuclei to form a larger nucleus.

3.2. Nuclear reaction that takes place in the sun and stars.

4. Nuclear Fission

4.1. The splitting part of a heavy nucleus into lighter nuclei and neutrons.

4.2. Used in nuclear powerplants.

5. Radioactive Decay

5.1. Alpha Decay

5.1.1. The decay of a nucleus by emitting an alpha particle.

5.2. Beta Decay

5.2.1. The decay of a nucleus by emitting beta particle.

5.3. Positron Emission

5.3.1. The decay of a nucleus by emitting a positron.

5.4. Gamma Emission

5.4.1. The decay of a nucleus by emitting gamma radiation.

6. Half-life

6.1. Time it takes for one-half of the sample to decay.

6.1.1. Examples Co-60 = 5.3 years I-131 = 8 days Tc-99m = 6 hours

6.2. Uses

6.2.1. Leukemia treatment

6.2.2. Thyroid therapy

6.2.3. Archaeological Dating

6.2.4. Organ Imaging

6.2.5. Cancer therapy