ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Materials Science & Technology
The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
2021 Student Conference
April 8–10, 2021
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Latest Journal Issues
Nuclear Science and Engineering
Fusion Science and Technology
NC State celebrates 70 years of nuclear engineering education
An early picture of the research reactor building on the North Carolina State University campus. The Department of Nuclear Engineering is celebrating the 70th anniversary of its nuclear engineering curriculum in 2020–2021. Photo: North Carolina State University
The Department of Nuclear Engineering at North Carolina State University has spent the 2020–2021 academic year celebrating the 70th anniversary of its becoming the first U.S. university to establish a nuclear engineering curriculum. It started in 1950, when Clifford Beck, then of Oak Ridge, Tenn., obtained support from NC State’s dean of engineering, Harold Lampe, to build the nation’s first university nuclear reactor and, in conjunction, establish an educational curriculum dedicated to nuclear engineering.
The department, host to the 2021 ANS Virtual Student Conference, scheduled for April 8–10, now features 23 tenure/tenure-track faculty and three research faculty members. “What a journey for the first nuclear engineering curriculum in the nation,” said Kostadin Ivanov, professor and department head.
Fusion Science and Technology | Volume 53 | Number 2 | February 2008 | Pages 425-432
Technical Paper | Diagnostics | dx.doi.org/10.13182/FST08-A1728
Articles are hosted by Taylor and Francis Online.
Plasma can be studied and characterised by the analysis of its radiation. Signals obtained by passive spectroscopy contain much information about temperature, density and flux of the main species and impurities. The interpretation of measured line intensities requires the knowledge of atomic physics describing the specific radiation from the plasma. Tomographic methods are applied but they need symmetries for the calculation of local parameters. Additionally in magnetic confined plasmas the interpretation might be more difficult due to the Zeeman splitting.Asymmetries and steep gradients of plasma parameters as it appears in the plasma boundary of a tokamak or stellarator require the direct local measurement of these quantities. There are two methods to probe the plasma locally, by a laser or an atomic beam. In both cases, elastic collisions lead to scattering of light (Thomson scattering), respectively atoms (Rutherford scattering) and inelastic collisions cause the emission of light that is analysed (laser induced fluorescence, atomic beam diagnostics).In this article we will concentrate on the interaction of beam atoms with plasma, yielding to optical emission, which is observed with spectroscopic methods. After interaction with the bulk plasma the beam atoms or deuterons and impurity ions can be investigated. The first method is called beam emission spectroscopy (BES), the second charge exchange recombination spectroscopy (CXRS).Both techniques need two ports, one for the injection and a second for observation, which should be nearly perpendicular in order to get the best spatial resolution. The location of the measurement is determined by the intersection of the beam with the (perpendicular) line of sight of the detection systemThis paper is structured in four chapters. After this introduction the basic properties of atomic beam injection used for BES and CXRS are described in chapter II. The collisional- radiative model necessary for the interpretation of the measured line intensities is presented in the third part. Examples of atomic beam sources applied in tokamaks and evaluated signals are given in the last chapter.