Gamma ray

well as the radiation can occur naturally in the water we drink , or in the soil , and construction materials ( radon from the ground and radioactive elements in the earth ) . He spoke of radiation as a result of its industry by humans, such as X-ray X-Rays, power plants, atomic energy is also in smoke detectors Ionization Smoke Detector. Radiation is known as the process that results in a starting capacity in the form of particles (Particles) or waves (Waves) The estimated scientific bodies in the

Nuclear medicine refers to the use of radioactivity to diagnose and treat diseases. Nuclear medicine is a rapidly expanding branch of chemistry that uses short-lived radioisotopes to seek out specific organs. Nuclear medicine can detect radiation coming from inside a patient’s body and as a result nuclear medicine can determine the cause of the medical problems based on organ’s function. The use of nuclear medicine techniques have increased due to its’ use of biological chemistry to target specific

Abstract The concentrations of 226Ra, 232Th and 40K are measured in the material collected from two locations. The collected materials are tested using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and from 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, the absorbed dose rate, annual effective dose and hazard index is also calculated Keywords Radionuclides

unit. An example of this occurring is when the electron is the beta particle. Pursuing this further, gamma rays are high-energy photons with a very short wavelength of 0.0005 to 0.1 nm. The emission of gamma radiation results from an energy change within the atomic nucleus. Gamma emission changes neither the atomic number nor the atomic mass. Alpha and beta emission are often accompanied by gamma emission, as an excited nucleus drops to a lower and more stable energy

RESULTS AND DISCUSSION The ability of Pleurotus citrinopleatus and Aspergillus niger exposed to two doses of gamma irradiation (1 and 2 KGy) and immobilized on wheat straw to decolorize the dyes had been studied. Table 2 shows peaks of wavelengths of different types of dyes before and after decolorization. Peaks of reactive red 6 BX, direct brown BN, direct yellow 5 G, disperse orange 2RLS, disperse violet 3RS, sulpher black Br and sulpher brown SG were at 295, 240, 400, 444, 499, 220 and 250nm were

The concentrations of 226Ra, 232Th and 40K are measured in the material collected from two locations .The collected materials are analyzed using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, absorbed dose rate, annual effective dose and hazard index are also calculated. Keywords Radionuclides, radiological

____________________ 1A scientific paper submitted in partial fulfillment of the requirements in Biology 30 laboratory under Professor Neilyn O. Villa, 1st semester, 2011-2012. ABSTRACT To determine the effects of gamma radiation in inducing mutation on the growth of corn (Zea mays), an experiment using corn seeds exposed in to different rate of radiation (0kr, 10 kr, 30 kr, and 50 kr) was done. Four treatments were prepared using 10 seeds from each of the following

Radioactivity occurs when unstable atomic nuclei decompose to form nuclei with a higher stability. Energy and particles are released during the decomposition process causes radiation. There are three different types of radiation; alpha, beta and gamma. Alpha radiation is when an alpha particle, or helium nucleus, decays into an atom with a mass number that is reduced by four and an atomic number that is reduced by two. Idaho State University (2011) explained that beta radiation is when an electron

Isotopes is when the atom is unstable, it will attempt to gain stability by emitting radiation in one of the three main forms. A substance is radioactive when it emits this radiation. There are three types of radiation: α (alpha), β (beta) and γ (gamma) radiation: • Alpha Decay: is made of ‘helium nucleus’ (2 protons and 2 neutrons) that are ejected from unstable large nuclei. Alpha radiation usually results when there are too many protons and neutrons in the nucleus for it to be stable. For example

produces gamma rays when it undergoes beta plus decay, also know as positron emission, occurring after the radioactive isotope undergoes change inside the nucleus. This change starts when an atom's proton is converted into a neutron inside the nucleus resulting in the loss of a positive charge, and a small amount of mass being lost. This mass is referred to as a positron. Then the positron after release collides with an electron and annihilation of the particles occur, producing two gamma rays. These