Influence of electronic environment on nuclear reaction rates

Vesić, J.; Cvetinović, A.; Lipoglavšek, M.; Petrovič, T.

doi:10.1140/epja/i2014-14153-3

Cited by 11 publications

(11 citation statements)

References 30 publications

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“…Also linear dependence of U e on target Z number was suggested in ref. [10], while findings of our group show a dependence of Ue on target preparation [12,13].…”

Section: Introductionmentioning

confidence: 58%

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Large electron screening effect in different environments

Cvetinović

Lipoglavšek

Markelj

et al. 2016

EPJ Web of Conferences

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Electron screening effect was studied on different hydrogen containing targets with the 7 Li, 11 B and 19 F ion beams. Results show large electron screening potentials strongly dependent on the proton number Z of the projectile. The largest ever measured screening potential with the value about a factor of 50 above the calculations from the model in adiabatic limit was observed in the graphite target containing hydrogen as an impurity.

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“…Also linear dependence of U e on target Z number was suggested in ref. [10], while findings of our group show a dependence of Ue on target preparation [12,13].…”

Section: Introductionmentioning

confidence: 58%

“…There are many experimental results published by different groups [5][6][7][8][9][10][11][12][13] that are inconsistent with the theoretical models (i.e. model in adiabatic limit [4]).…”

Section: Introductionmentioning

confidence: 99%

Large electron screening effect in different environments

Cvetinović

Lipoglavšek

Markelj

et al. 2016

EPJ Web of Conferences

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“…The effect is important in astrophysical scenarios, where almost all nuclear reactions happen at low energies and nuclei are not alone in the stellar plasma. The predicted effect was confirmed experimentally, but its measured magnitude was very often way above predictions [2][3][4][5][6][7][8][9][10][11]. Although the theory predicts an independence of electron screening on the nuclear surroundings, measurements of the same reactions in different environments gave different magnitudes of electron screening.…”

Section: Introductionmentioning

confidence: 79%

Catalysis of Nuclear Reactions by Electrons

Lipoglavšek

2017

EPJ Web Conf.

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Abstract. Electron screening enhances nuclear reaction cross sections at low energies. We studied the nuclear reaction 1 H( 19 F,αγ) 16 O in inverse kinematics in different solid hydrogen targets. Measured resonance strengths differed by up to a factor of 10 in different targets. We also studied the 2 H(p,γ) 3 He fusion reaction and observed electrons emitted as reaction products instead of γ rays. In this case electron screening greatly enhances internal conversion probability.

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“…where U e is the electron screening potential. Experimental studies of various nuclear reactions in metals have shown the expected cross section enhancement at low energies [3][4][5][6][7]. However, the enhancements in metallic targets were significantly larger than expected from the adiabatic limit, which provides the theoretical maximum for the magnitude of electron screening.…”

Section: Introductionmentioning

confidence: 93%

Effect of Electron Screening on Nuclear Reaction Rates

Vesić¹,

Cvetinović²,

Petrovič³

et al. 2015

Acta Phys. Pol. B

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Recently, we performed an extensive experimental campaign, with an aim to study the electron screening in the laboratory for various nuclear reactions and involving both low and high Z targets. Contrary to the large effect observed for low Z targets, no large electron screening was observed for high Z targets. This result was quite surprising and in continuation of our campaign, we focused on the studies of low Z targets. The 2 H(p, γ) 3 He reaction was studied at low energies, in different deuterium implanted materials. Although we were not able to deduce the value of electron screening, we report three new values for the cross section.

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Influence of electronic environment on nuclear reaction rates

Cited by 11 publications

References 30 publications

Large electron screening effect in different environments

Large electron screening effect in different environments

Catalysis of Nuclear Reactions by Electrons

Effect of Electron Screening on Nuclear Reaction Rates

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