Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions

E. Williams; K. Sekizawa; D. J. Hinde; C. Simenel; M. Dasgupta; I. P. Carter; K. J. Cook; D. Y. Jeung; S. D. McNeil; C. S. Palshetkar; D. C. Rafferty; K. Ramachandran; A. Wakhle

doi:10.1103/PhysRevLett.120.022501

Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions

E. Williams, K. Sekizawa, D. J. Hinde, C. Simenel, M. Dasgupta, I. P. Carter, K. J. Cook, D. Y. Jeung, S. D. McNeil, C. S. Palshetkar, D. C. Rafferty, K. Ramachandran, A. Wakhle

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39 Citations (Scopus)

Abstract

Energy dissipative processes play a key role in how quantum many-body systems dynamically evolve toward equilibrium. In closed quantum systems, such processes are attributed to the transfer of energy from collective motion to single-particle degrees of freedom; however, the quantum many-body dynamics of this evolutionary process is poorly understood. To explore energy dissipative phenomena and equilibration dynamics in one such system, an experimental investigation of deep-inelastic and fusion-fission outcomes in the Ni58+Ni60 reaction has been carried out. Experimental outcomes have been compared to theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations. Excellent quantitative agreement has been found between experiment and calculations, indicating that microscopic models incorporating one-body dissipation and fluctuations provide a potential tool for exploring dissipation in low-energy heavy ion collisions.

Original language	English
Article number	022501
Journal	Physical Review Letters
Volume	120
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.120.022501
Publication status	Published - 10 Jan 2018

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Williams, E., Sekizawa, K., Hinde, D. J., Simenel, C., Dasgupta, M., Carter, I. P., Cook, K. J., Jeung, D. Y., McNeil, S. D., Palshetkar, C. S., Rafferty, D. C., Ramachandran, K., & Wakhle, A. (2018). Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions. Physical Review Letters, 120(2), Article 022501. https://doi.org/10.1103/PhysRevLett.120.022501

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title = "Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions",

abstract = "Energy dissipative processes play a key role in how quantum many-body systems dynamically evolve toward equilibrium. In closed quantum systems, such processes are attributed to the transfer of energy from collective motion to single-particle degrees of freedom; however, the quantum many-body dynamics of this evolutionary process is poorly understood. To explore energy dissipative phenomena and equilibration dynamics in one such system, an experimental investigation of deep-inelastic and fusion-fission outcomes in the Ni58+Ni60 reaction has been carried out. Experimental outcomes have been compared to theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations. Excellent quantitative agreement has been found between experiment and calculations, indicating that microscopic models incorporating one-body dissipation and fluctuations provide a potential tool for exploring dissipation in low-energy heavy ion collisions.",

author = "E. Williams and K. Sekizawa and Hinde, {D. J.} and C. Simenel and M. Dasgupta and Carter, {I. P.} and Cook, {K. J.} and Jeung, {D. Y.} and McNeil, {S. D.} and Palshetkar, {C. S.} and Rafferty, {D. C.} and K. Ramachandran and A. Wakhle",

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doi = "10.1103/PhysRevLett.120.022501",

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Williams, E, Sekizawa, K, Hinde, DJ , Simenel, C , Dasgupta, M, Carter, IP, Cook, KJ, Jeung, DY, McNeil, SD, Palshetkar, CS, Rafferty, DC, Ramachandran, K & Wakhle, A 2018, 'Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions', Physical Review Letters, vol. 120, no. 2, 022501. https://doi.org/10.1103/PhysRevLett.120.022501

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AU - Williams, E.

AU - Sekizawa, K.

AU - Hinde, D. J.

AU - Simenel, C.

AU - Dasgupta, M.

AU - Carter, I. P.

AU - Cook, K. J.

AU - Jeung, D. Y.

AU - McNeil, S. D.

AU - Palshetkar, C. S.

AU - Rafferty, D. C.

AU - Ramachandran, K.

AU - Wakhle, A.

PY - 2018/1/10

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AB - Energy dissipative processes play a key role in how quantum many-body systems dynamically evolve toward equilibrium. In closed quantum systems, such processes are attributed to the transfer of energy from collective motion to single-particle degrees of freedom; however, the quantum many-body dynamics of this evolutionary process is poorly understood. To explore energy dissipative phenomena and equilibration dynamics in one such system, an experimental investigation of deep-inelastic and fusion-fission outcomes in the Ni58+Ni60 reaction has been carried out. Experimental outcomes have been compared to theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations. Excellent quantitative agreement has been found between experiment and calculations, indicating that microscopic models incorporating one-body dissipation and fluctuations provide a potential tool for exploring dissipation in low-energy heavy ion collisions.

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Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in Ni 58 + Ni 60 Reactions

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