Radioactivity

Gold Leaf Electroscope [Can detect: Alpha particles only] Alpha radiation can be detected using a charged electroscope as in on the left. The more intense the radiation, the faster the leaf falls.  The method isn’t suitable for detecting beta and gamma-radiation as these cause insufficient ionization of the air.

Detecting Nuclear Radiation Most methods of detecting alpha-, beta- and gamma-rays are based on the fact that these radiations have an ionizing effect. The detectors used to detect radioactive emissions include 3 Types of Radioactive Emission Characteristics of Radioactive Emission Detectors of Radiation Gold Leaf Electroscope Geiger-Muller Tube Cloud Chamber Spark-Chamber Detector Film Badge (Dosimeter) … Read more

Ionising Effect All alpha, beta and gamma emission can cause ionising effect. Alpha particle has high ionizing power.Beta particle has low ionizing power. Gamma ray has very low ionizing power. Penetrating Power Deflection in Electric Field Deflection in Magnetic Field Alpha and beta emission can be deflected by a magnetic field. The direction of deflection … Read more

3 Types of Radioactive Emission Alpha Particle carries positive charge. most strongly ionizing of the nuclear radiations.  least penetrating. Range in air is only a few centimetres, and can be stopped by a thick sheet of paper. Beta Particle carry a negative charge.  much less ionizing than alpha emission. more penetrating than alpha emission.. have … Read more

Radioactivity Radioactivity is the spontaneous process of an unstable nucleus emitting radioactive emission in order to become more stable. The process is said to be spontaneous because it is neither affected by the physical condition nor the chemical composition. Decay is said to occur in the parent nucleus and produces a daughter nucleus. This is … Read more

The Composition of the Nucleus You have learned in chemistry that in an atom, electrons move around a central core called the nucleus. The nucleus consists of protons and neutrons. It contains almost all the mass of the atom. The nucleus of an atom is very small compared to the size of the atom Protons … Read more

Radioactivity The Composition of the Nucleus Radioactivity 3 Types of Radioactive Emission Characteristics of Radioactive Emission Detectors of Radiation Gold Leaf Electroscope Geiger-Muller Tube Cloud Chamber Spark-Chamber Detector Film Badge (Dosimeter) Radioactive Decay Alpha Decay Beta Decay Gamma Decay Series Decay Half-life Uses of Radioisotopes Uses of Radioisotope in Archeology Uses of Radioisotope in Industry Uses of … Read more