Lithium: Heat Content from 0 to 900°, Triple Point and Heat of Fusion, and Thermodynamic Properties of the Solid and Liquid<sup>1</sup>

Douglas, Thomas B.; Epstein, Leo F.; Dever, J.L.; Howland, William H.

doi:10.1021/ja01613a031

Cited by 72 publications

(13 citation statements)

References 6 publications

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“…being ITT u' 20' u' 30' g and ITT g have been observed at energies of 51· 5, 51· 6, 52· 8 and 53·9 eV respectively (Schwarz et al 1978). The more difficult task is to explain the experimental observation that these molecular lines have an intensity of -30% of the atomic photoelectron lines in the range 64-68 eV, when under the experimental conditions using a furnace temperature between 400 and 500°C the lithium vapour contains less than 1 % dimers (Douglas et al 1955;Stull and Prophet 1977). At 1 % relative abundance of Li2 molecules, a molecular photoexcitation cross section at least one order of magnitude larger than the atomic photoionisation cross section is required to explain the observation.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Larkins¹,

Richards²

1986

Aust. J. Phys.

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A numerical method has been used for the generation of molecular continuum wavefunctions at the relaxed Hartree-Fock level associated with the photoionisation of the lithium molecule. Exchange between the continuum electron and the ion core is included, but L coupling is neglected. Cross sections for core and valence shell photoionisation have been calculated from threshold to 6·0 a. u. The results differ significantly in detail from previous multiple scattering calculations. Continuum phase shifts and the asymmetry parameters for the various processes are also reported. The molecular cross section values are compared with atomic cross sections calculated at the relaxed Hartree-Fock level. The Li2 molecular Auger transition rates are also calculated from first principles using the appropriate two-centre continuum functions. The results provide a basis for the reinterpretation of recent experimental findings of photoemission data for the lithium vapour system.

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Section: Comparison With Experimental Datamentioning

confidence: 99%

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Larkins¹,

Richards²

1986

Aust. J. Phys.

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“…The C p of Li 2 O 2 is the same as the one from Chang and Hallstedt . The C p of pure solid and liquid Li shown in Figures and are compared with the available experimental data …”

Section: Thermodynamic Assessment and Optimizationmentioning

confidence: 98%

Experimental and thermodynamic study of Li‐O and Li₂O‐P₂O₅ systems

et al. 2019

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LiFePO 4 (LFP) as a promising cathode material has been extensively studied. However, the high cost of current batch production technology limits its application, especially in automotive industries. To develop the new melting synthesis of LFP, the process conditions have to be strictly controlled, such as temperature, composition, and the partial pressure of oxygen. Reliable and accurate thermodynamic information about Li-Fe-P-O systems could serve as a useful guide for designing operating conditions. As part of ongoing efforts, the Li-O and Li 2 O-P 2 O 5 binary systems have been first studied following the CALPHAD method using FactSage thermodynamic software. The data on thermodynamic properties (C p , enthalpy of formation, and vapour pressure) and phase diagrams (liquidus/solidus temperature, phase transition, and solid solubility) available in the literature were carefully reviewed and evaluated for the above-mentioned systems. The modified quasichemical model (MQM) with quadruplet approximation was used for the liquid phase in the present studies. This model simultaneously takes into account the short-range ordering of firstnearest-neighbours (FNN) and second-nearest-neighbours (SNN), which improves the thermodynamic description of the Gibbs energy of the liquid. The thermodynamic model parameters of the Gibbs energy have been obtained for all of the phases considered in the Li-O and Li 2 O-P 2 O 5 binary systems. DSC-TGA experiments on the selected four compositions were carried out to validate the liquidus and phase transition temperature reported in the literature. Overall, the self-consistent thermodynamic description using the model parameters obtained in this work can successfully reproduce the evaluated experimental data.

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“…where γ refers to the discount factor and r t+1 is the observed reward. The whole system is trained using prioritized experience replay Lin (1993), a modified version of -greedy learning, and a temporal difference loss that is computed as:…”

Section: Knowledge Graphs For Dqnsmentioning

confidence: 99%

Transfer in Deep Reinforcement Learning Using Knowledge Graphs

Ammanabrolu¹,

Riedl²

2019

Proceedings of the Thirteenth Workshop on Graph-Based Methods for Natural Language Processing (TextGraphs-13)

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Text adventure games, in which players must make sense of the world through text descriptions and declare actions through text descriptions, provide a stepping stone toward grounding action in language. Prior work has demonstrated that using a knowledge graph as a state representation and question-answering to pre-train a deep Q-network facilitates faster control policy learning. In this paper, we explore the use of knowledge graphs as a representation for domain knowledge transfer for training text-adventure playing reinforcement learning agents. Our methods are tested across multiple computer generated and human authored games, varying in domain and complexity, and demonstrate that our transfer learning methods let us learn a higher-quality control policy faster.

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Lithium: Heat Content from 0 to 900°, Triple Point and Heat of Fusion, and Thermodynamic Properties of the Solid and Liquid¹

Cited by 72 publications

References 6 publications

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Experimental and thermodynamic study of Li‐O and Li₂O‐P₂O₅ systems

Transfer in Deep Reinforcement Learning Using Knowledge Graphs

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Lithium: Heat Content from 0 to 900°, Triple Point and Heat of Fusion, and Thermodynamic Properties of the Solid and Liquid1

Cited by 72 publications

References 6 publications

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Photoionisation and Auger Electron Emission from the Lithium Molecule: Calculations using Multicentre Numerical Continuum Functions

Experimental and thermodynamic study of Li‐O and Li2O‐P2O5 systems

Transfer in Deep Reinforcement Learning Using Knowledge Graphs

Contact Info

Product

Resources

About

Lithium: Heat Content from 0 to 900°, Triple Point and Heat of Fusion, and Thermodynamic Properties of the Solid and Liquid¹

Experimental and thermodynamic study of Li‐O and Li₂O‐P₂O₅ systems