α-Decay in ultra-intense laser fields

Mișicu, Ş.; Rizea, M.

doi:10.1088/0954-3899/40/9/095101

Cited by 35 publications

(34 citation statements)

References 45 publications

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“…This quantitative question, however, remains unanswered. Mişicu and Rizea numerically solve a time-dependent Schrödinger equation using a one-dimensional (1D) model nuclear potential [24,25]. They focus on obtaining qualitative understandings instead of quantitative evaluations.…”

Section: Introductionmentioning

confidence: 99%

α decay in intense laser fields: Calculations using realistic nuclear potentials

et al. 2019

Phys. Rev. C

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We calculate the effect of intense laser fields on nuclear alpha decay processes, using realistic and quantitative nuclear potentials. We show that alpha decay rates can indeed be modified by strong laser fields to some finite extent. We also predict that alpha decays with lower decay energies are relatively easier to be modified than those with higher decay energies, due to longer tunneling paths for the laser field to act on. Furthermore, we predict that modifications to angle-resolved penetrability are easier to achieve than modifications to angle-integrated penetrability.

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Section: Introductionmentioning

confidence: 99%

α decay in intense laser fields: Calculations using realistic nuclear potentials

et al. 2019

Phys. Rev. C

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“…is the effective charge [52], and V (r) is the original Coulomb potential between the cluster and daughter nuclei. Here, for simplicity, we adopt the natural unit c = 1.…”

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confidence: 99%

Charged particle emissions in high-frequency alternative electric fields

2018

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Proton emission, α decay, and cluster radioactivity play an important role in nuclear physics.We show that high-frequency alternative electric fields could deform Coulomb barriers that trap the charged particle, and raise the possibility of speeding up charged particle emissions. They could also cause anisotropic effects in charged particle emissions, and introduce additional terms in the Geiger-Nuttall laws. Our study may further suggest that, for proton emitters like 166 Ir, when the electric field is strong, the dominant decay mode could be changed from α decay to proton emission. As high-frequency alternative electric fields correspond to high-frequency laser fields in the dipole approximation, our study could be viewed as a benchmark for future theoretical studies of charged particle emissions in realistic laser fields.Recent years witness great progress in studying proton emission, α decay, and cluster radioactivity [1][2][3][4]. Historically, modern theoretical nuclear physics originates from the explanation of α decay by Gamow, Gurney and Condon in 1928 [5, 6]. Interests in alpha decay persist after that, and lots of interesting results have been obtained . Later discoveries of proton emission in the 1960s [37,38] and cluster radioactivity in the 1980s [39,40] also make important contributions to deepening our understanding of nuclei lying near the border of nuclear stability. Recently, it is pointed out by Ref. [41][42][43][44][45][46][47] that, α decay, proton emission, and cluster radioactivity could be described systematically using unified decay rules. For a pedagogic introduction to charged particle emissions, we would like to recommend Ref. [1]. In the last few years, several works [50][51][52][53][54][55][56] are devoted to α decay in strong electromagnetic fields, partially inspired by the upcoming powerful laser facilities in the near future [48, 49]. These studies provide some preliminary hints that strong laser fields could speed up α decays. This is not only interesting from the pure academic viewpoint, but also might be helpful for decontaminating α-radioactive nuclear wastes. In this note, we study charged particle emissions in high-frequency alternative electric fields, treating α decay, proton emission, cluster radioactivity in a unified approach inspired by Ref. [41][42][43][44][45][46][47].By high-frequency alternative electric fields, we refer to alternative electric fields with frequencies (photon energies ω) much higher than the Q values of charged particle emissions, which means ω Q α ∼ 10 MeV, Q p ∼ 1 MeV, Q c ∼ 50 MeV for α decay, proton emission, and cluster radioactivity, respectively. High-frequency alternative electric fields correspond 1/3 d and R c0 = 1.2A 1/3 c are their radii. β 2d and β 2c are the corresponding deformation parameters. The spherical Coulomb potential could be restored by setting β λ = 0.

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“…Intense laser fields at a peak intensity exceeding 10 23 W/cm 2 may be generated soon with the extreme light infrastructure (ELI) in Europe [8][9][10] or the superintense ultrafast laser facility (SULF) of Shanghai [11][12][13]. The possible available intense laser fields have attracted some attention on the laser-induced effects on nuclear processes including α decay [14][15][16][17][18][19] and D-T fusion [20][21][22]. For D-T fusion in the limit of very high laser frequencies as in x-ray regime, some qualitative estimations have been given by Queisser and Schützhold based on a Floquet scattering method [20] and by Lv et al using a Krammer-Henneberger approximation [21].…”

Section: Introductionmentioning

confidence: 99%

Thermonuclear fusion and generalized Gamow penetrability factor in intense laser fields

2021

Preprint

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A theoretical study on thermonuclear fusion including deuterium-tritium (D-T) fusion and D-3 He fusion in intense laser fields has been shown in this article. With the laser fields expected to be available in the near future, some quantitative results for the laser-induced modifications to the cross-sections are given. It is reported that the cross-sections are more sensitive to the external laser fields at the lower energies. An explicit generalized form of the Gamow penetrability factor is given for the predictions of the laser-induced effects for some other similar nuclear processes.

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α-Decay in ultra-intense laser fields

Cited by 35 publications

References 45 publications

α decay in intense laser fields: Calculations using realistic nuclear potentials

α decay in intense laser fields: Calculations using realistic nuclear potentials

Charged particle emissions in high-frequency alternative electric fields

Thermonuclear fusion and generalized Gamow penetrability factor in intense laser fields

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