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Janik D, Janik I, Bartels DM. Neutron and beta/gamma radiolysis of water up to supercritical conditions. 1. beta/gamma yields for H(2), H(.) atom, and hydrated electron. J Phys Chem A. 2007;111(32):7777-86doi: 10.1021/jp071751r.
Janik, D., Janik, I., & Bartels, D. M. (2007). Neutron and beta/gamma radiolysis of water up to supercritical conditions. 1. beta/gamma yields for H(2), H(.) atom, and hydrated electron. The journal of physical chemistry. A, 111(32), 7777-86. https://doi.org/10.1021/jp071751r
Janik, Dorota, et al. "Neutron and beta/gamma radiolysis of water up to supercritical conditions. 1. beta/gamma yields for H(2), H(.) atom, and hydrated electron." The journal of physical chemistry. A vol. 111,32 (2007): 7777-86. doi: https://doi.org/10.1021/jp071751r
Janik D, Janik I, Bartels DM. Neutron and beta/gamma radiolysis of water up to supercritical conditions. 1. beta/gamma yields for H(2), H(.) atom, and hydrated electron. J Phys Chem A. 2007 Aug 16;111(32):7777-86. doi: 10.1021/jp071751r. Epub 2007 Jul 24. PMID: 17645317.
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J Phys Chem A. 2007 Aug 16;111(32):7777-86. doi: 10.1021/jp071751r. Epub 2007 Jul 24.

Neutron and beta/gamma radiolysis of water up to supercritical conditions. 1. beta/gamma yields for H(2), H(.) atom, and hydrated electron.

The journal of physical chemistry. A

Dorota Janik, Ireneusz Janik, David M Bartels

Affiliations

  1. Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.

PMID: 17645317 DOI: 10.1021/jp071751r

Abstract

Yields for H2, H(.) atom, and hydrated electron production in beta/gamma radiolysis of water have been measured from room temperature up to 400 degrees C on a 250 bar isobar, and also as a function of pressure (density) at 380 and 400 degrees C. Radiolysis was carried out using a beam of 2-3 MeV electrons from a van de Graaff accelerator, and detection was by mass spectrometer analysis of gases sparged from the irradiated water. N2O was used as a specific scavenger for hydrated electrons giving N2 as product. Ethanol-d(6) was used to scavenge H(.) atoms, giving HD as a stable product. It is found that the hydrated electron yield decreases and the H(.) atom yield increases dramatically at lower densities in supercritical water, and the overall escape yield increases. The yield of molecular H2 increases with temperature and does not tend toward zero at low density, indicating that it is formed promptly rather than in spur recombination. A minimum in both the radical and H2 yields is observed around 0.4 kg/dm(3) density in supercritical water.

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