Radiation Therapy for Breast Cancer Quick Links Facts About Breast Cancer Treating Breast Cancer External Beam Radiation Therapy Accelerated Partial Breast Irradiation Radiation After Mastectomy Possible ...

Longitudinal accelerations of the two external artery heat pipes under consideration for use as radiator elements on Space Station Freedom could result in redistribution of the working fluid and dryout of the evaporator. This would require a reduction in the evaporator heat flux to allow rewetting. This paper reports the results of an ...

This report examines some properties of a new type of open accelerating structure. It consists of a series of rectangular cavities, which we call foxholes, joined by a beam channel. The power for accelerating the particles comes from an external radiation source and enters the cavities through their open upper ...

A total of 91 patients with stage 1 endometrial adenocarcinoma who were referred for radiation prior to hysterectomy were randomly allocated to receive either intracavitary or external beam irradiation. Total abdominal hysterectomy was done 4--8 weeks later. The 53 patients who received intracavitary irradiation had an actuarial 5 year disease-free ...

Radiation therapy is widely used for the treatment of orbital tumors and inflammatory disease. Both external beam teletherapy and implant brachytherapy radiation techniques are employed. External beam radiation therapy is the most common. It involves directing an external ...

A core topic in graduate courses in electrodynamics is the description of radiation from an accelerated charge and the associated radiation reaction. However, contemporary papers still express a diversity of views on the question of whether or not a uniformly accelerating charge radiates ...

A core topic in graduate courses in electrodynamics is the description of radiation from an accelerated charge and the associated radiation reaction. However, contemporary papers still express a diversity of views on the question of whether or not a uniformly accelerating charge radiates ...

This dissertation tests models of relativistic electron acceleration in the earth's outer radiation belt. The models fall into two categories: external and internal. External acceleration models transport and accelerate electrons from a source region in the outer ...

We calculate the radiation resulting from the Unruh effect for strongly accelerated electrons and show that the photons are created in pairs whose polarizations are perfectly correlated. Apart from the photon statistics, this quantum radiation can further be discriminated from the classical (Larmor) radiation via ...

We calculate the radiation resulting from the Unruh effect for strongly accelerated electrons and show that the photons are created in pairs whose polarizations are perfectly correlated. Apart from the photon statistics, this quantum radiation can further be discriminated from the classical (Larmor) radiation via ...

External radiation levels due to positron annihilation radiation from exp 11 C, exp 13 N, and exp 15 O released by the 800 MeV linear proton accelerator at the Los Alamos Meson Physics Facility (LAMPF) have been monitored at a fence-line location both by ...

Classical radiation from an accelerated charge is reviewed along with the reciprocal topic of accelerated observers detecting radiation from a static charge.

Gravitational radiation from high energy particles in modern accelerators is reviewed. We point out that the most effective way for laboratory production and detection of gravitons is through resonant photon-graviton conversion in a strong external EM fie...

The program introduces the viewer to the basic components of the linac, including a brief description of external and internal parts and their functions. It discusses functions of main components and also discusses the technical operation of the linac, in...

The theory of radiation emitted by a charged particle with spin in relativistic motion in an external magnetic field is reviewed. Approximate expressions suitable numerical computation, in far and near field, are derived. In particular, the case of the passage of a particle accelerator beam through an undulator is considered. It is ...

A simple example of the mass-energy relation is given by using electromagnetic calculations for a classical hydrogen atom, a point mass electron moving under the Coulomb force in a uniform circular orbit around a heavy point mass proton when the radiation-reaction self-force is neglected. The system mass is determined by calculating the ratio of the total ...

We give a systematic development of the theory of the radiation field of an accelerated charged particle with reference to an inertial reference frame in flat spacetime. Special emphasis is given to the role of the Schott energy and momentum in the energy-momentum balance of the charge and its field. It is shown that the energy of the ...

... EXTERNAL RADIATION FIELDS FOR ISOTROPICALLY SCATTERING FINITE ATMOSPHERES BOUNDED BY A LAMBERT LAW REFLECTOR. ...

Calculation of the radiation effect on electron oscillation in a circular accelerator is first illustrated by a simple example. In the derivation of the equations a harmonic oscillator colliding with particles of an external medium so that it exchanges momentum and energy at random and instantaneously is considered initially. ...

External radiation levels due to positron annihilation radiation from /sup 11/C, /sup 13/N, and /sup 15/O released by the 800 MeV linear proton accelerator at the Los Alamos Meson Physics Facility (LAMPF) have been monitored at a fence-line location both by thermoluminescent dosimeters (TLDs) and high pressure ...

This text and reference for nuclear engineers, radiation protection technologists, and medical physicists covers the design of shields for radioactive sources, x-ray machines, low energy accelerators, and nuclear reactors. It is also concerned with the prediction and measurement of dose in the body from external and internal sources, ...

Individual monitoring at accelerator facilities is discussed, within the framework set out by the International Commission on Radiological Protection and with reference to the implementation of the recommendations of that body within the European Basic Safety Standards. Legislation in other parts of the world may differ, but a worldwide perspective on this subject would be too ...

This dissertation deals with the motion and ablation of stars in the collapse phase of a closed Friedmann inverse. Stars are initially accelerated due to the collapse of space. Radiation drag becomes increasingly important, however, and in most, and in most of the cases considered leads to maximum speeds and rapid deceleration. The ...

... RADIATION, SOURCES, SYMPOSIA, SYNCHROTRONS, ELECTRON ACCELERATORS, LINEAR ACCELERATORS, ELECTRON OPTICS ...

The Los Alamos Meson Physics Facility (LAMPF) is an 800-million electron volt, l mA intensity linear proton accelerator used for studying subatomic particles at relativistic velocities. Routine operation of the accelerator results in the formation of short-lived air activation products, primarily in the beam stop section of LAMPF. This study presents the ...

We review the current and future accelerator technologies for generation of high brightness radiation beam.

As the principles of plasma based acceleration are now firmly established, significant interest is being devoted to the control of the acceleration processes, critical in applications. In addition, the possibility to use plasma based accelerators technology to provide compact light sources is also being thoroughly investigated. In this ...

Guidelines are presented for the development of radiation therapy capability in northwestern Pennsylvania. A surplus of megavoltage (cobalt therapy, linear accelerator) capability exists in the area, (as of 1976) therefore recommendations are made for one clinical radiation therapy center and three or four ...

This report discusses the following topics: Composition of Accelerator Radiation Fields; Shielding of Electrons and Photons at Accelerators; Shielding of Hadrons at Accelerators; Low Energy Prompt Radiation Phenomena; Induced Radioactivity at Accelerators...

... EXTERNAL, IMMUNITY, CARDIOVASCULAR SYSTEM, ADULTS, IONIZING RADIATION, HEMATOPOIETIC SYSTEM, RADIATION EFFECTS ...

A 6-Bev alternating gradient electron synchrotron, similar to the Cambridge Electron Synchrotron, is being constructed at Hamburg. The basic design features of the accelerator and its buildings are summarized. The maximum energy and orbit radius, AG magnet structure, magnet power cycle, radiation by electrons, radiofrequency ...

This review deals with late somatic effects of ionizing radiation, mainly following whole body exposure, and their partial resemblance to what is generally referred to as 'premature and/or accelerated ageing'. Emphasis is given to results indicating that not all age-dependant diseases or degenerative disorders are hastened by ...

BS>The various considerations that motivated the choice of an accelerator of this type are reviewed giving basic design data. This accelerator plant consists of 3 cavity klystron HF sources, accelerator-guide consisting of a succession of pi /2 cavities, external shield of concrete material providing ...

... SHIELDING), (*NUCLEAR RADIATION, SHIELDING), LINEAR ... HAZARDS, MATERIALS, SAFETY ... NUCLEAR RADIATION SHIELD, PROTECTION & ...

The dynamics of a cylinder rolling on a horizontal plane acted on by an external force applied at an arbitrary angle is studied with emphasis on the directions of the acceleration of the centre-of-mass and the angular acceleration of the body. If rolling occurs without slipping, there is a relationship between the directions of these ...