IFE Brage (Institute for Energy Technology)
Not a member yet
997 research outputs found
Sort by
Half-Heusler Phase Formation and Ni Atom Distribution in M-Ni-Sn (M = Hf, Ti, Zr) systems
Get PDFacceptedVersio
Resistivity profiles in multicrystalline silicon ingots featuring gallium co-doping
Get PDFpublishedVersio
Experimental studies of thorium ion implantation from pulse laser plasma into thin silicon oxide layers
Get PDFacceptedVersio
Learning from successful operations in nuclear power plants - a guideline
Get PDFThis report contains a guideline for learning from successful operational experiences in nuclear power plants. The suggested approach is systems-oriented in nature. The initial part of the guideline introduces the definition of success used in the report, discusses the benefits of learning from successes and outlines how learning from successes requires a different analysis approach than learning from failures. This is followed by a description of the seven principles for learning from successes on which the methodology in the guideline was developed: • Learning from successes should be supported by the organizational culture. • Successes may be perceived differently from one person to the next. • Successes may be embedded in a chain of events that has no successful outcome. • Successes may have different learning potentials. • Success is sometimes a result of non-permanent factors. • Pseudo-success may lead to complacency and drift. • Implementation of lessons learned should be guided by a systemic approach. The main part of the guideline contains step-by-step guidance on how to capture and analyze successes. It is structured in five parts: (1) Capturing potential successes (2) Screen for learning potential (3) Analyze - local stakeholder perspective. The section refers to analyses carried out within the local organizational unit, who experienced the success. (4) Analyze - joint stakeholder group perspective. This section refers to analyses carried out jointly by all organizational units, who may be directly or indirectly impacted by the success and/or by how the success was achieved. (5) Implement the lessons learned from the actual success.publishedVersio
Stability assessment of PITT tracer candidate compounds: the case of benzyl alcohols
Get PDFacceptedVersio
Exact ray theory for the calculation of the optical generation rate in optically thin solar cells
Get PDFThere is a profound duality between rays and waves. In fact, 70 years ago, in the context of quantum mechanics, Feynman showed that rays, properly equipped with phases and correctly summed, provide exact solutions of the quantum mechanical wave equation. In this paper, constructing explicit, exact ray solutions of the one-dimensional Helmholtz equation as a model for optically thin solar cells, we show that the ray-wave duality is also exact in the context of the electromagnetic wave equations. We introduce a complex index of refraction in order to include absorption. This have so far not been treated in the quantum ray-splitting literature. We show that inclusion of exact phases is mandatory and that a ray theory without phases may result in amplitude errors of up to 60%. We also show that in the case of multi-layered solar cells the correct summation order of rays is important. Providing support for the notion that rays provide the “skeleton” of electromagnetic waves, we perform a Fourier transform of the (experimentally measurable) solar cell reflection amplitude, which reveals the rays as peaks in the optical path length spectrum. An application of our exact ray theory to a silicon solar cell is also provided. Treating the one-dimensional case exactly, our paper lays the foundation for constructing exact ray theories for application to solar cell absorption cross section in two and three dimensions.Exact ray theory for the calculation of the optical generation rate in optically thin solar cellspublishedVersio
Temperature coefficients in compensated silicon solar cells investigated by temperature dependent lifetime measurements and numerical device simulation
Get PDFpublishedVersio
