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Nichols KA, Hu SX, White AJ, Goncharov VN, Mihaylov DI, Collins LA, Shaffer NR, Karasiev VV. Time-dependent density-functional-theory calculations of the nonlocal electron stopping range for inertial confinement fusion applications. Phys Rev E 2023; 108:035206. [PMID: 37849196 DOI: 10.1103/physreve.108.035206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/18/2023] [Indexed: 10/19/2023]
Abstract
Nonlocal electron transport is important for understanding laser-target coupling for laser-direct-drive (LDD) inertial confinement fusion (ICF) simulations. Current models for the nonlocal electron mean free path in radiation-hydrodynamic codes are based on plasma-physics models developed decades ago; improvements are needed to accurately predict the electron conduction in LDD simulations of ICF target implosions. We utilized time-dependent density functional theory (TD-DFT) to calculate the electron stopping power (SP) in the so-called conduction-zone plasmas of polystyrene in a wide range of densities and temperatures relevant to LDD. Compared with the modified Lee-More model, the TD-DFT calculations indicated a lower SP and a higher stopping range for nonlocal electrons. We fit these electron SP calculations to obtain a global analytical model for the electron stopping range as a function of plasma conditions and the nonlocal electron kinetic energy. This model was implemented in the one-dimensional radiation-hydrodynamic code lilac to perform simulations of LDD ICF implosions, which are further compared with simulations by the standard modified Lee-More model. Results from these integrated simulations are discussed in terms of the implications of this TD-DFT-based mean-free-path model to ICF simulations.
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Affiliation(s)
- K A Nichols
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14623-1299, USA
| | - S X Hu
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14623-1299, USA
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623-1299, USA
| | - A J White
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - V N Goncharov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623-1299, USA
| | - D I Mihaylov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
| | - L A Collins
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N R Shaffer
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
| | - V V Karasiev
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA
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Tolu D, Guillaumont D, de la Lande A. Irradiation of Plutonium Tributyl Phosphate Complexes by Ionizing Alpha Particles: A Computational Study. J Phys Chem A 2023; 127:7045-7057. [PMID: 37606197 DOI: 10.1021/acs.jpca.3c02117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
The PUREX solvent extraction process, widely used for recovering uranium and plutonium from spent nuclear fuel, utilizes an organic solvent composed of tributyl phosphate (TBP). The emission of ionizing particles such as alpha particles, resulting from the decay of plutonium, makes the organic solvent vulnerable to degradation. Here, we study the ultrashort time alpha irradiation of tributylphosphate (TBP) and Pu(NO3)4(TBP)2 complex formed in the PUREX process. Electron dynamics is propagated by Real-Time-Dependent Auxiliary Density Functional Theory (RT-TD-ADFT). We investigate the use of previously proposed absorption boundary conditions (ABC) in the molecular orbital space to treat secondary electron emission. Basis set and exchange correlation functional effects with ABC are reported as well as a detailed analysis of the ABC parametrization. Preliminary results on the water molecule and then on TBP show that the phenomenological nature of the ABC parameters necessitates selecting appropriate values for each system under study. Irradiation of free and complexed TBP shows an influence of the ligands on the variation of atomic charges on the femtosecond time scale. An accumulation of atomic charges in the alkyl chains of TBP is observed in the case where the nitrate groups are predominantly irradiated. In addition, we find that the Pu atom regains its electric charge very rapidly after being hit by the projectile, with the coordination sphere serving as an electron reservoir to preserve its formal redox state. This study paves the road toward a full understanding of the degradation of organic extracants employed in the nuclear industry.
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Affiliation(s)
- Damien Tolu
- CEA, DES, ISEC, DMRC, Université Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
- Institut de Chimie Physique, CNRS, Université Paris Saclay, 15 Avenue Jean Perrin, Paris, 91405, France
| | - Dominique Guillaumont
- CEA, DES, ISEC, DMRC, Université Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Aurélien de la Lande
- Institut de Chimie Physique, CNRS, Université Paris Saclay, 15 Avenue Jean Perrin, Paris, 91405, France
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Nagy I, Aldazabal I. Correlated model atom in a time-dependent external field: Sign effect in the energy shift. ADVANCES IN QUANTUM CHEMISTRY 2019. [DOI: 10.1016/bs.aiq.2019.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Stopping Power of an Electron Gas for Heavy Unit Charges: Models in the Kinetic Approximation. ADVANCES IN QUANTUM CHEMISTRY 2004. [DOI: 10.1016/s0065-3276(04)46010-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Porter L. The Barkas-Effect Correction to Bethe–Bloch Stopping Power. ADVANCES IN QUANTUM CHEMISTRY 2004. [DOI: 10.1016/s0065-3276(04)46004-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Pitarke J, Gurtubay I, Nazarov V. Nonlinear, Band-Structure, and Surface Effects in the Interaction of Charged Particles with Solids. ADVANCES IN QUANTUM CHEMISTRY 2004. [DOI: 10.1016/s0065-3276(04)45011-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gaztelurrutia TDR, Pitarke JM. Many-body approach to the nonlinear interaction of charged particles with an interacting free electron gas. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0305-4470/34/37/313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Azevedo GM, Grande PL, Behar M, Dias JF, Schiwietz G. Giant Barkas effect observed for light ions channeling in Si. PHYSICAL REVIEW LETTERS 2001; 86:1482-1485. [PMID: 11290173 DOI: 10.1103/physrevlett.86.1482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2000] [Revised: 12/12/2000] [Indexed: 05/23/2023]
Abstract
Measurements of the electronic energy loss are presented for (4)He and (7)Li ions channeling along the Si main axial directions at intermediate to high projectile energies. The Barkas effect, an energy-loss enhancement proportional to the third power of the projectile charge at high energies, is clearly separated from other processes. It reaches about 50% for Li ions channeling along the Si [110] direction. The observed Barkas contribution from the valence-electron gas is in fair agreement with the Lindhard model.
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Affiliation(s)
- G M Azevedo
- Instituto de Física da Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil
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Pitarke JM, Ritchie RH, Echenique PM. Quadratic response theory of the energy loss of charged particles in an electron gas. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:13883-13902. [PMID: 9980604 DOI: 10.1103/physrevb.52.13883] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nagy I, Arnau A, Echenique PM. Screening and stopping of charged particles in an electron gas. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:5650-5652. [PMID: 10009085 DOI: 10.1103/physrevb.48.5650] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Adamo A, Agnello M, Balestra F, Belli G, Bendiscioli G, Bertin A, Boccaccio P, Bonazzola GC, Bressani T, Bruschi M, Bussa MP, Busso L, Calvo D, Capponi M, Cicalò C, Corradini M, Costa S, D'Antone I, D'Isep F, Donzella A, Falomkin IV, Fava L, Feliciello A, Ferrero L, Filippini V, Galli D, Garfagnini R, Gastaldi U, Gianotti P, Grasso A, Guaraldo C, Iazzi F, Lanaro A, Lombardi M, Lucherini V, Maggiora A, Marcello S, Marconi U, Maron G, Masoni A, Massa I, Minetti B, Morando M, Montagna P, Nichitiu F, Panzieri D, Pauli G, Piccinini M, Piragino G, Poli M, Pontecorvo GB, Puddu G, Ricci RA, Rossetto E, Rotondi A, Rozhdestvensky AM, Salvini P, Santi L, Sapozhnikov MG, Serci S, Temnikov P. Antiproton stopping power in hydrogen below 120 keV and the Barkas effect. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:4517-4520. [PMID: 9909464 DOI: 10.1103/physreva.47.4517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Straton JC, McGuire JH, Chen Z. Technique for the evaluation of double excitation of atoms by fast charged particles. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:5514-5524. [PMID: 9908802 DOI: 10.1103/physreva.46.5514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Mikkelsen HH, Flyvbjerg H. Exact stopping cross section of the quantum harmonic oscillator for a penetrating point charge of arbitrary strength. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 45:3025-3031. [PMID: 9907337 DOI: 10.1103/physreva.45.3025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Nagy I, Arnau A, Echenique PM, Zaremba E. Stopping characteristics for a slow antiproton. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:12172-12175. [PMID: 9999372 DOI: 10.1103/physrevb.44.12172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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McGuire JH, Straton JC. Double excitation of helium by fast particles of charge Z. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:5184-5187. [PMID: 9905650 DOI: 10.1103/physreva.43.5184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Borovsky JE, Suszcynsky DM. Experimental investigation of the z2 scaling law of fast-ion-produced secondary-electron emission. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:1416-1432. [PMID: 9905168 DOI: 10.1103/physreva.43.1416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Mikkelsen HH, Flyvbjerg H. Barkas effect in a central collision: Exact numerical results and the tenth-order Born series. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:3962-3970. [PMID: 9904495 DOI: 10.1103/physreva.42.3962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Nagy I, Apagyi B, Ladányi K. Stopping power of an electron gas for a slow antiproton. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:1806-1808. [PMID: 9904220 DOI: 10.1103/physreva.42.1806] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Andersen LH, Hvelplund P, Knudsen H, Moller SP, Pedersen JO, Tang-Petersen S, Uggerhoj E, Elsener K, Morenzoni E. Single ionization of helium by 40-3000-keV antiprotons. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:6536-6539. [PMID: 9903059 DOI: 10.1103/physreva.41.6536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bichsel H. Barkas effect and effective charge in the theory of stopping power. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:3642-3647. [PMID: 9903535 DOI: 10.1103/physreva.41.3642] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Meltzer DE, Sabin JR, Trickey SB. Calculation of mean excitation energy and stopping cross section in the orbital local plasma approximation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:220-232. [PMID: 9902862 DOI: 10.1103/physreva.41.220] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Nagy I, Arnau A, Echenique PM, Zaremba E. Low-velocity antiproton stopping power. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:11983-11985. [PMID: 9991818 DOI: 10.1103/physrevb.40.11983] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fainstein PD, Ponce VH, Rivarola RD. K- and L-shell electron emission from carbon atoms by antiproton and proton impact. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 40:2828-2830. [PMID: 9902487 DOI: 10.1103/physreva.40.2828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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