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Xin Y, Yang X, Wan C, Wang R, Zhu Y, Yi Y, Zhang Z, Tang Y, Chen Q, Wang Z. Confinement effects of mandrel degradation in ICF target fabrication. J Chem Phys 2024; 160:164702. [PMID: 38647312 DOI: 10.1063/5.0196688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/02/2024] [Indexed: 04/25/2024] Open
Abstract
Understanding and further regulating the degradation of mandrel materials is a key aspect of target fabrication in inertial confinement fusion (ICF). Here, a quasi-one-dimensional confinement model is developed using a series of single-walled carbon nanotubes with varying diameters (Dm), and the degradation of poly-α-methylstyrene (PAMS) as a typical mandrel material is investigated under such confined conditions by using the combined method of quantum mechanics and molecular mechanics. In comparison to the isolated system, the calculations show that confinement can decrease or increase the energy barriers of PAMS degradation, which directly depends on Dm. Following which a clear exponential relationship between the degradation rate of PAMS and its own density is derived, indicating that the density of PAMS can be used to regulate mandrel degradation. This work highlights the important effects of confinement on degradation and provides a valuable reference for further development of polymer degradation technologies in ICF target fabrication and other fields.
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Affiliation(s)
- Yue Xin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xinrui Yang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Chenxi Wan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
- Key Laboratory of Material Simulation Methods and Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Rui Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Yu Zhu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
- Key Laboratory of Material Simulation Methods and Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- College of Physics and Electronic Engineering, Hainan Normal University, Haikou 571158, China
| | - Yong Yi
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zhanwen Zhang
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Yongjian Tang
- State Key Laboratory of Environmental-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Qiang Chen
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
- Key Laboratory of Material Simulation Methods and Software of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China
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Yusef Buey M, Mineva T, Rapacioli M. Coupling density functional based tight binding with class 1 force fields in a hybrid QM/MM scheme. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02878-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Energetics and structure of glycine and alanine based model peptides: Approximate SCC-DFTB, AM1 and PM3 methods in comparison with DFT, HF and MP2 calculations. Chem Phys 2001. [DOI: 10.1016/s0301-0104(00)00375-x] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Elstner M, Jalkanen K, Knapp-Mohammady M, Frauenheim T, Suhai S. DFT studies on helix formation in N-acetyl-(L-alanyl)n-N′-methylamide for n=1–20. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00100-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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