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Slow Neutron Detectors
Published in Douglas S. McGregor, J. Kenneth Shultis, Radiation Detection, 2020
Douglas S. McGregor, J. Kenneth Shultis
A method introduced at Oak Ridge National Laboratory (ORNL) also uses a 252Cf source. The neutron source is placed within a large block of HDPE capable of moderating and minimizing the leakage of neutrons. A blind hole beamport is drilled into the HDPE block that is oriented towards the source, but still leaves enough moderator between the drilled beamport hole and the 252Cf to produce a thermalized neutron beam. A borated shutter, composed of perpendicular jaws, is attached to the moderator block around the beamport opening and is used to reduce the beam cross sectional area. The thermal-neutron flux at the testing location is measured with a calibrated neutron detector. For additional verification, MCNP is used to calculate the expected neutron flux and profile at the testing location and is quoted as having approximately 10% error [McGregor and Shultis 2011]. The observed count rate, per unit area, from the detector being studied is then divided by the measured thermal-neutron flux to determine the intrinsic neutron detection efficiency.
Unsteady-State Heat Conduction
Published in William S. Janna, Engineering Heat Transfer, 2018
Solving Tc=39.5°C(aluminum−oak)
Assessing Students’ Object-Oriented Programming Skills with Java: The “Department-Employee” Project
Published in Journal of Computer Information Systems, 2020
Xihui Zhang, John D. Crabtree, Mark G. Terwilliger, Tyler T. Redman
These and other issues inspired James Gosling at Sun Microsystems to create a language, originally known as Oak, that was object-oriented, standard, and portable. The first releases of the rebranded Java programming language and its Java Development Kit (JDK) were made available to the public in 1995. According to Benander et al.,19 the best feature of Java is its “platform independency.”