Radioactive Decay
... Positron emission : a particle that has the same mass as an electron, but has a positive charge and is emitted during some types of radioactive decay. ...
... Positron emission : a particle that has the same mass as an electron, but has a positive charge and is emitted during some types of radioactive decay. ...
II. Basic Physics of Ionizing Radiation
... • Radioactive nuclei undergo disintegration at a rate that is proportional to the number of untransformed nuclei present. • The physical half-life is the time required for one-half of the remaining nuclei to transform. • The half-life is characteristic if the radionuclide. ...
... • Radioactive nuclei undergo disintegration at a rate that is proportional to the number of untransformed nuclei present. • The physical half-life is the time required for one-half of the remaining nuclei to transform. • The half-life is characteristic if the radionuclide. ...
Isotopes of an atom have the same number of protons, but a different
... This process occur with neutron deficient or proton rich nuclei. Conversion of a proton into neutron + positron (β+ ) + v (neutrino). Positrons are emitted with a continuous energy spectrum. After β+ particle emission, the daughter nuclide has an atomic number that is one less than that of t ...
... This process occur with neutron deficient or proton rich nuclei. Conversion of a proton into neutron + positron (β+ ) + v (neutrino). Positrons are emitted with a continuous energy spectrum. After β+ particle emission, the daughter nuclide has an atomic number that is one less than that of t ...
Outline Chapter 8 The Nucleus 8-1. J.J. Thompson`s Plum Pudding
... Italian physicist Enrico Fermi in Chicago in 1942. ...
... Italian physicist Enrico Fermi in Chicago in 1942. ...
Appendix A Glossary of Nuclear Terms
... particles and most beta particles. accelerator: Device used to increase the energy of particles, which then collide with other particles. Major types are linear accelerators and circular accelerators. The name refers to the path taken by the accelerated particle. activity: The rate of radioactive de ...
... particles and most beta particles. accelerator: Device used to increase the energy of particles, which then collide with other particles. Major types are linear accelerators and circular accelerators. The name refers to the path taken by the accelerated particle. activity: The rate of radioactive de ...
TOPIC 5 – ATOMIC PHYSICS Radioactivity or radioactive decay:
... smoke enters between the plates, some of the alpha particles are absorbed causing less ionisation to take place. This means a smaller than normal current flows so the alarm switches on. (safety and security) 3. Beta particles are used to monitor the thickness of the paper or metal sheets in manufact ...
... smoke enters between the plates, some of the alpha particles are absorbed causing less ionisation to take place. This means a smaller than normal current flows so the alarm switches on. (safety and security) 3. Beta particles are used to monitor the thickness of the paper or metal sheets in manufact ...
Student 5
... What conclusions were made about the atom from Rutherford’s gold leaf experiment? Rutherford fired a beam of alpha particles at thin gold foil. The alpha particles were from a radioactive source, in an evacuated container. A scintillation detector then rotated around the container was used to pick u ...
... What conclusions were made about the atom from Rutherford’s gold leaf experiment? Rutherford fired a beam of alpha particles at thin gold foil. The alpha particles were from a radioactive source, in an evacuated container. A scintillation detector then rotated around the container was used to pick u ...
Notes: Nuclear Chemistry
... iii. Gamma radiation (γ) iv. Positron radiation (β+) v. X-ray radiation Half-life (t1/2) = the time required for one-half of the atoms of a radioisotope to emit radiation and to decay to other products. a. The stability of a radioisotope is determined by its half-life; the longer the half-life, the ...
... iii. Gamma radiation (γ) iv. Positron radiation (β+) v. X-ray radiation Half-life (t1/2) = the time required for one-half of the atoms of a radioisotope to emit radiation and to decay to other products. a. The stability of a radioisotope is determined by its half-life; the longer the half-life, the ...
Medical Radiation Technologists Board
... course of their treatment and educate patients on the management of any treatment related side-effects. • Radiation Therapists' competencies include but are not limited to patient care, treatment design and delivery, radiation safety, clinical and organisational responsibility for the planning and t ...
... course of their treatment and educate patients on the management of any treatment related side-effects. • Radiation Therapists' competencies include but are not limited to patient care, treatment design and delivery, radiation safety, clinical and organisational responsibility for the planning and t ...
Isotopes of an atom have the same number of protons, but a different
... ● This means that they have no mass and no charge. ● In Gamma decay: atomic number unchanged, atomic mass unchanged. ● Gamma rays have a high penetrating power - it takes a thick sheet of metal such as lead to reduce them. ● Gamma rays do not directly ionize other atoms, although they may cause atom ...
... ● This means that they have no mass and no charge. ● In Gamma decay: atomic number unchanged, atomic mass unchanged. ● Gamma rays have a high penetrating power - it takes a thick sheet of metal such as lead to reduce them. ● Gamma rays do not directly ionize other atoms, although they may cause atom ...
Chapter 29: Nuclear Physics
... Alpha, beta, and gamma radiation penetrates to different depths in biological materials. •Alpha rays are stopped by a few cm of air or about 0.02 ...
... Alpha, beta, and gamma radiation penetrates to different depths in biological materials. •Alpha rays are stopped by a few cm of air or about 0.02 ...
atomic number.
... damage molecules in cells: 1. Interferes with cell reproduction 2. Destruction of cell’s function or destruction of cell itself. It has the greatest effect on cells that are rapidly reproducing because they do not have time to repair the damage: 1. Fetus, infants, children (also in animals and plant ...
... damage molecules in cells: 1. Interferes with cell reproduction 2. Destruction of cell’s function or destruction of cell itself. It has the greatest effect on cells that are rapidly reproducing because they do not have time to repair the damage: 1. Fetus, infants, children (also in animals and plant ...
Radioactivity
... iii) Detecting leaks in underground water pipes • A radioactive substance which emits beta particles is added to a fluid in a pipeline to measure the flow rate in the pipeline and to find ...
... iii) Detecting leaks in underground water pipes • A radioactive substance which emits beta particles is added to a fluid in a pipeline to measure the flow rate in the pipeline and to find ...
IONIZING RADIATION AND RADIONUCLIDS AS THE SOURSES …
... As the atomic mass number increases, the ratio of neutrons to protons increases according to a definite pattern. If isotopes vary from this pattern, they are relatively unstable. The most stable state of a nucleus is called the ‘ground’ state. In an unstable nucleus the nucleons are in an ‘exited’ s ...
... As the atomic mass number increases, the ratio of neutrons to protons increases according to a definite pattern. If isotopes vary from this pattern, they are relatively unstable. The most stable state of a nucleus is called the ‘ground’ state. In an unstable nucleus the nucleons are in an ‘exited’ s ...
Unit 2: The Atom
... •Alpha decay is how elements greater than Bismuth try to become stable. •They will emit an alpha particle (2 neutrons and 2 protons) to try to become stable. •Alpha reactions will always have He on the right side! •To balance: write the upper and lower equations! ...
... •Alpha decay is how elements greater than Bismuth try to become stable. •They will emit an alpha particle (2 neutrons and 2 protons) to try to become stable. •Alpha reactions will always have He on the right side! •To balance: write the upper and lower equations! ...
Topic 14 - Lloyd Crosby
... b. 1 rem = 1 rad x 1 RBE c. RBE is from Relative Biological Effectiveness. d. The RBE factor depends on how destructive to biological tissues a type of radiation happens to be for the same amount of energy delivered to the tissue e. RBEs for selected radiation (1) X-rays: RBE = 0.7 (2) beta: ...
... b. 1 rem = 1 rad x 1 RBE c. RBE is from Relative Biological Effectiveness. d. The RBE factor depends on how destructive to biological tissues a type of radiation happens to be for the same amount of energy delivered to the tissue e. RBEs for selected radiation (1) X-rays: RBE = 0.7 (2) beta: ...
Alpha Decay
... The alpha particle is a helium nucleus (2protons, 2 neutrons) produced from the radioactive decay of heavy metals and some nuclear reaction. The high positive charge (2+) of an alpha particle causes electrical excitation and ionization of surrounding atoms. Alpha particles are the least penetr ...
... The alpha particle is a helium nucleus (2protons, 2 neutrons) produced from the radioactive decay of heavy metals and some nuclear reaction. The high positive charge (2+) of an alpha particle causes electrical excitation and ionization of surrounding atoms. Alpha particles are the least penetr ...
Nuclear Medicine - LSUHSC Shreveport
... 1. Ask the attending questions during rotation. 2. Participation in Journal Club 3. Radiation safety and nuclear medicine physics lectures (C. Killgore, DABR) 4. Observe at least one of each of the different scans routinely performed, as well as all the infrequently ordered studies. Using most morni ...
... 1. Ask the attending questions during rotation. 2. Participation in Journal Club 3. Radiation safety and nuclear medicine physics lectures (C. Killgore, DABR) 4. Observe at least one of each of the different scans routinely performed, as well as all the infrequently ordered studies. Using most morni ...
acr technical standard for medical physics performance monitoring
... improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for radiologists, radiation oncologists, medical physicists, and persons practicing in allied professional fields. The American College of Radiology will perio ...
... improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for radiologists, radiation oncologists, medical physicists, and persons practicing in allied professional fields. The American College of Radiology will perio ...
Chapter 26
... During beta decay, the daughter nucleus has the same number of nucleons as the parent, but the atomic number is changed by one Symbolically ...
... During beta decay, the daughter nucleus has the same number of nucleons as the parent, but the atomic number is changed by one Symbolically ...
Diagnostic nuclear medicine in pediatric oncology-what
... Wider application of pediatric nuclear medicine as a specific and particularly delicate field of nuclear medicine started in the 70s (1). The methods made it possible to obtain diagnostic information which was not easily, if at all, obtainable by means of other diagnostic procedures (1). Breakthroug ...
... Wider application of pediatric nuclear medicine as a specific and particularly delicate field of nuclear medicine started in the 70s (1). The methods made it possible to obtain diagnostic information which was not easily, if at all, obtainable by means of other diagnostic procedures (1). Breakthroug ...
Basics of nuclear physics
... one into another. The transformation of nucleons (proton into neutron and vice versa) in beta-decay is caused by weak force Weak force acts between particles called leptons (electron, neutrino and their antiparticles are leptons). The transformation of nucleons, mediated by weak force, is always acc ...
... one into another. The transformation of nucleons (proton into neutron and vice versa) in beta-decay is caused by weak force Weak force acts between particles called leptons (electron, neutrino and their antiparticles are leptons). The transformation of nucleons, mediated by weak force, is always acc ...
Types of Radiation
... good n/p ratio (high stability, low energy state). Form a new kind of atom. Each isotope or nuclide decays in a certain manner to get a better n/p ratio. The decay mode is named for the particle emitted. See Table N. ...
... good n/p ratio (high stability, low energy state). Form a new kind of atom. Each isotope or nuclide decays in a certain manner to get a better n/p ratio. The decay mode is named for the particle emitted. See Table N. ...
Nuclear Medicine / Diagnostic Radiology
... Review all scans as they are performed for significant findings that require prompt attention, and make decisions in regard to notification of the referring physician if the attending faculty is not available for consultation. Be involved with the CQI process through occurrence screen forms, inciden ...
... Review all scans as they are performed for significant findings that require prompt attention, and make decisions in regard to notification of the referring physician if the attending faculty is not available for consultation. Be involved with the CQI process through occurrence screen forms, inciden ...
Technetium-99m
Technetium-99m is a metastable nuclear isomer of technetium-99 (itself an isotope of technetium), symbolized as 99mTc, that is used in tens of millions of medical diagnostic procedures annually, making it the most commonly used medical radioisotope.Technetium-99m is used as a radioactive tracer and can be detected in the body by medical equipment (gamma cameras). It is well suited to the role because it emits readily detectable 140 keV gamma rays (these 8.8pm photons are about the same wavelength as emitted by conventional X-ray diagnostic equipment) and its half-life for gamma emission is 6.0058 hours (meaning 93.7% of it decays to 99Tc in 24 hours). The ""short"" physical half-life of the isotope and its biological half-life of 1 day (in terms of human activity and metabolism) allows for scanning procedures which collect data rapidly but keep total patient radiation exposure low. The same characteristics make the isotope suitable only for diagnostic but never therapeutic use.Technetium-99m was discovered as a product of cyclotron bombardment of molybdenum. This procedure produced molybdenum-99, a radionuclide with a longer half-life (2.75 days), which decays to Tc-99m. At present, molybdenum-99 (Mo-99) is used commercially as the easily transportable source of medically used Tc-99m. In turn, this Mo-99 is usually created commercially by fission of highly enriched uranium in aging research and material testing nuclear reactors in several countries.