dorsal/arxiv
View SchemaEffects of pulsed low frequency electromagnetic fields on water using photoluminescence spectroscopy: role of bubble/water interface
| Authors | Philippe Vallée, Jacques Lafait, Pascale Mentré, Marie-Odile Monod, Yolène Thomas |
|---|---|
| Categories | |
| ArXiv ID | physics/0502076 |
| URL | https://arxiv.org/abs/physics/0502076 |
| DOI | 10.1063/1.1860553 |
Abstract
The effects of a pulsed low frequency electromagnetic field were investigated on photoluminescence of well characterized water and prepared under controlled conditions (container, atmospheric, electromagnetic, and acoustic environments). When reference water samples were excited at 260 nm, two wide emission bands centered at 345 nm (3.6 eV) and 425 nm (2.9 eV) were observed. By contrast under 310 nm excitation, only one band appeared at 425 nm. Interestingly, electromagnetic treatment (EMT) induced, at both excitation wavelengths, a decrease (around 70%) in the 425 nm band relative photoluminescence intensity. However, no difference between reference and treated sample was observed in the 345 nm band. Other experiments, performed on outgassed samples (reference and treated), show that the emission bands (position, shape, intensity) under excitation at 260 nm and 310 nm were similar and close to the corresponding bands of the treated nonoutgassed samples. Similar effects were observed on photoluminescence excitation of water samples. Two excitation bands monitored at 425 nm were observed at 272 nm and 330 nm. After EMT and/or outgassing, a decrease (> 60%) was observed in the intensity of these two bands. Altogether, these results indicate that electromagnetic treatment and/or outgassing decrease in a similar fashion the photoluminescence intensity in water samples. They also suggest that this effect is most likely indirectly attributed to the presence of gas bubbles in water. The possible role of hydrated ionic shell around the bubbles in the observed extraluminescence is discussed.
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"abstract": "The effects of a pulsed low frequency electromagnetic field were investigated\non photoluminescence of well characterized water and prepared under controlled\nconditions (container, atmospheric, electromagnetic, and acoustic\nenvironments). When reference water samples were excited at 260 nm, two wide\nemission bands centered at 345 nm (3.6 eV) and 425 nm (2.9 eV) were observed.\nBy contrast under 310 nm excitation, only one band appeared at 425 nm.\nInterestingly, electromagnetic treatment (EMT) induced, at both excitation\nwavelengths, a decrease (around 70%) in the 425 nm band relative\nphotoluminescence intensity. However, no difference between reference and\ntreated sample was observed in the 345 nm band. Other experiments, performed on\noutgassed samples (reference and treated), show that the emission bands\n(position, shape, intensity) under excitation at 260 nm and 310 nm were similar\nand close to the corresponding bands of the treated nonoutgassed samples.\nSimilar effects were observed on photoluminescence excitation of water samples.\nTwo excitation bands monitored at 425 nm were observed at 272 nm and 330 nm.\nAfter EMT and/or outgassing, a decrease (\u003e 60%) was observed in the intensity\nof these two bands. Altogether, these results indicate that electromagnetic\ntreatment and/or outgassing decrease in a similar fashion the photoluminescence\nintensity in water samples. They also suggest that this effect is most likely\nindirectly attributed to the presence of gas bubbles in water. The possible\nrole of hydrated ionic shell around the bubbles in the observed\nextraluminescence is discussed.",
"arxiv_id": "physics/0502076",
"authors": [
"Philippe Vall\u00e9e",
"Jacques Lafait",
"Pascale Mentr\u00e9",
"Marie-Odile Monod",
"Yol\u00e8ne Thomas"
],
"categories": [
"physics.chem-ph",
"physics.bio-ph"
],
"doi": "10.1063/1.1860553",
"title": "Effects of pulsed low frequency electromagnetic fields on water using photoluminescence spectroscopy: role of bubble/water interface",
"url": "https://arxiv.org/abs/physics/0502076"
},
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