Beam quality definition

Beam quality means a term that describes the penetrating power of the x-ray beam. This is identified by half-value layer and is influenced by kilovolt peak (kVp) and filtration.
Sample 1Sample 2Sample 3

Examples of Beam quality in a sentence

  • Beam quality (diagnostic x-ray)--A term that describes the penetrating power of the x-ray beam.

  • Beam quality correction (kQ) factors were linearly interpolated from the calculated values listed in TRS-398(11), using measurements of tissue-phantom ratios at 10 cm and 20 cm depth.

  • Production of a fluorescence probe in ion-beam radiolysis of aqueous coumarin-3-carboxylic acid solution-1: Beam quality and concentration dependences.

  • Beam quality at the end of the linac meets the requirements for commissioning the undulator systems.

  • Beam quality would change as the x-ray tube ages due to deposition of target material on the inside of the tube window and to roughning of the target track (CEC, 1996).

  • Beam quality plays an important role, since it limits the maximal number of beams that can be coupled in a fiber of given core size and numerical aperture.

  • Beam quality can hence be monitored in a continuous or pulse-to-pulse mode operation.

  • Beam quality was measured using an ion chamber in solid water at isocenter with appropriate TPR20/10 build-up.

  • Accepted ArticleResults: Beam quality was within ±0.5 % of the 0 T value for the 1 and 1.5 T magnetic field strengths.

  • Solid-State Lasers, Materials and ComponentsDiode pumped solid-state lasers and amplifiers • Upconversion lasers • Novel pump sources and techniques • Cavity design • High power operation • Beam quality improvements • Microchip lasers • Lasers with pulse compression • Narrow linewidth lasers • Advances in fiber lasers • Amplitude and frequency stabilization • Nonlinear frequency conversion R2.

Related to Beam quality

  • Radiopharmaceutical quality assurance means, but is not limited to, the performance of appropriate chemical, biological, and physical tests on potential radiopharmaceuticals and the interpretation of the resulting data to determine their suitability for use in humans and animals, including internal test assessment, authentication of product history, and the keeping of proper records.

  • High Quality Waters means all state waters, except:

  • Water quality means the physical characteristics of water within shoreline jurisdiction, including water quantity, hydrological, physical, chemical, aesthetic, recreation-related, and biological characteristics. Where used in this chapter, the term "water quantity" refers only to development and uses regulated under this chapter and affecting water quantity, such as impermeable surfaces and storm water handling practices. Water quantity, for purposes of this chapter, does not mean the withdrawal of ground water or diversion of surface water pursuant to RCW 90.03.250 through 90.03.340.

  • Quality Surveillance Engineer / Inspector means any person appointed by or on behalf of the Purchaser to inspect or carry out quality surveillance on supplies, stores or work under the Contract or any person deputed by the Quality Surveillance Engineer for the said purpose.

  • Quality means the totality of features and characteristics of a product or service that bear on its ability to satisfy stated or implied needs;

  • Ambient air quality standard means an established concentration, exposure time, and frequency of occurrence of air contaminant(s) in the ambient air which shall not be exceeded.

  • National Ambient Air Quality Standards or “NAAQS” means national ambient air quality standards that are promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.

  • Water quality standards means provisions of state or federal law which consist of a designated use or uses for the waters of the Commonwealth and water quality criteria for such waters based upon such uses. Water quality standards are to protect the public health or welfare, enhance the quality of water and serve the purposes of the State Water Control Law (§ 62.1-44.2 et seq. of the Code of Virginia) and the federal Clean Water Act (33 USC § 1251 et seq.).

  • Biological safety cabinet means a containment unit suitable for the preparation of low to moderate risk agents where there is a need for protection of the product, personnel, and environment, according to National Sanitation Foundation (NSF) Standard 49.

  • Water quality volume means the volume equal to the first one-half inch of runoff multiplied by the impervious surface of the land development project.

  • General air quality operating permit or "general permit" means an air quality operating permit that meets the requirements of ARM 17.8.1222, covers multiple sources in a source category, and is issued in lieu of individual permits being issued to each source.

  • Quality Assurance Plan or “QAP” shall have the meaning set forth in Clause 11.2;

  • Applicable water quality standards means all water quality standards to which a discharge is subject under the federal Clean Water Act and which has been (a) approved or permitted to remain in effect by the Administrator following submission to the Administrator pursuant to Section 303(a) of the Act, or (b) promulgated by the Director pursuant to Section 303(b) or 303(c) of the Act, and standards promulgated under (APCEC) Regulation No. 2, as amended.

  • health and safety specification means a site, activity or project specific document prepared by the client pertaining to all health and safety requirements related to construction work;

  • Reliability means the degree of performance of the bulk electric system that results in electricity being delivered within Reliability Standards and in the amount desired. Electric system Reliability can be addressed by considering two basic and functional aspects of electric systems, which are Adequacy and Security.

  • New Jersey Stormwater Best Management Practices (BMP) Manual or “BMP Manual” means the manual maintained by the Department providing, in part, design specifications, removal rates, calculation methods, and soil testing procedures approved by the Department as being capable of contributing to the achievement of the stormwater management standards specified in this chapter. The BMP Manual is periodically amended by the Department as necessary to provide design specifications on additional best management practices and new information on already included practices reflecting the best available current information regarding the particular practice and the Department’s determination as to the ability of that best management practice to contribute to compliance with the standards contained in this chapter. Alternative stormwater management measures, removal rates, or calculation methods may be utilized, subject to any limitations specified in this chapter, provided the design engineer demonstrates to the municipality, in accordance with Section IV.F. of this ordinance and N.J.A.C. 7:8-5.2(g), that the proposed measure and its design will contribute to achievement of the design and performance standards established by this chapter.

  • Soil texture means proportion by weight of sand, silt, and clay in a soil.

  • Quality Assurance means a systematic procedure for assessing the effectiveness, efficiency, and appropriateness of services.

  • Beam scattering foil means a thin piece of material (usually metallic) placed in the beam to scatter a beam of electrons in order to provide a more uniform electron distribution in the useful beam.

  • Stability means structural stability.

  • Clinical nurse specialist means a registered nurse with relevant post-basic qualifications and 12 months’ experience working in the clinical area of his/her specified post-basic qualification, or a minimum of four years’ post-basic registration experience, including three years’ experience in the relevant specialist field and who satisfies the local criteria.

  • Emission Control Strategy means any device, system, or strategy employed with a diesel-fueled CI engine that is intended to reduce emissions. Examples of emission control strategies include, but are not limited to, particulate filters, diesel oxidation catalysts, selective catalytic reduction systems, alternative fuels, fuel additives used in combination with particulate filters, alternative diesel fuels, and combinations of the above.

  • Erosion and sediment control plan means a comprehensive plan developed to address pollution caused by erosion and sedimentation of soil particles or rock fragments during construction.

  • Multiregional Modeling Working Group or “MMWG” shall mean the NERC working group that is charged with multi-regional modeling.

  • Reliability Standards means the criteria, standards, rules and requirements relating to reliability established by a Standards Authority.

  • Comprehensive resource analysis means an analysis including,