Characterization and luminescent properties of thermally annealed olivines

Colín-García, Marìa; Correcher, V.; García-Guinea, Javier; Heredia-Barbero, Alejandro; Roman-Lopez, J.; Ortega-Gutiérrez, Fernando; Negrón‐Mendoza, A.; Ramos-Bernal, S.

doi:10.1016/j.radmeas.2013.02.008

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…Liquid water, or at least pockets containing liquid water, can also form due to the thermal energy generated by a world. Hydrothermal vents that are observed at the bottom of the ocean are well-known on the Earth, where the hot fluid is present beneath the ocean floor and are caused by underlying magma that is close to the surface (Colín-García et al, 2016). Liquid water could also exist on a so-called rogue planet in interstellar space if it had both a high-pressure heat-trapping hydrogen atmosphere and a geothermal heat flux.…”

Section: The Habitable Zonementioning

confidence: 99%

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A limbus mundi elucidation of habitability: the Goldilocks Edge

Hegner¹

2020

International Journal of Astrobiology

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The habitable zone is the circumstellar region in which a terrestrial-mass planet with an atmosphere can sustain liquid water on its surface. However, despite the usefulness of this concept, it is being found to be increasingly limited in a number of ways. The following is known: (i) Liquid water can exist on worlds for reasons unrelated to its specific distance from a star. (ii) Energy sources can exist for reasons unrelated to the distance to a star. Furthermore, the habitable zone is based on both astronomy – the distance and stellar energy – and chemistry – liquid water and the right temperature. However, these factors are only part of the consideration. Thus, discussions of habitability and the possibility for the emergence of life on a world must consider the evolutionary principles that govern life as well as the laws that govern stellar and planetary science. This is important because the following is also known: (iii) The temporal window for the emergence of life is within 600 million years. (iv) The Earth was an extreme environment overall in the period when this window existed. (v) The first life was necessarily fragile. Therefore, chemical evolution must have taken place in a relatively protected and restricted environment. Thus, rather than as in the Goldilocks zone, which focuses too narrowly on the world as a whole, this paper suggests that it is better to focus on a particular region and time period on a world, in which conditions fit for habitability exist. Thus, the following is suggested: ‘The Goldilocks Edge is a spatial and temporal window on an astronomical body or planemo, where liquid solvents, SPONCH elements and energy sources exist’. Furthermore, since the mere presence of these does not necessarily lead to the emergence of life, this possibility only arises when these interact. Thus, it will also be suggested that the following can exist within the Goldilocks Edge: ‘The great prebiotic spot is an environmentally relaxed and semi-shielded area on an otherwise extreme world, wherein conditions advantageous for chemical evolution exist’. Such Goldilocks Edges and the great prebiotic spots within them can collectively represent the full distribution of possibilities for life in a solar system. Thus, the concept of a ‘limbus mundi’ or ‘world's edge’ is introduced.

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Section: The Habitable Zonementioning

confidence: 99%

“…The hydrothermal vents that occur around plate margins at the oceanic floor of the Earth are well-known, some with relatively high temperatures. In these phenomena the hot fluids flow from beneath the surface to the ocean floor, caused by the heat source from the underlying magma (Colín-García et al, 2016).…”

Section: The Goldilocks Edgementioning

confidence: 99%

A limbus mundi elucidation of habitability: the Goldilocks Edge

Hegner¹

2020

International Journal of Astrobiology

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“…An electron bound to an atom or molecule absorbs sufficient photon energy from a UVC source to escape from the electric potential that originally confined it. This property is of interest because it can be employed as a tool for testing the potential applicability for UV dosimetry purposes, which, to the best of our knowledge, have been mostly studied using synthetic materials, such as BeO [11], GR-200 and TLD-100 [14], KCl:Eu 2+ [15], NaCl:Cu + [16] and 20CaB 4 O 7 :Dy,Li-80CaB 2 O 4 :Dy,Li [17], but has been scarcely investigated using natural materials, including CaF 2 [18], some aluminosilicates (albite) [19], and olivine [20]. This paper reports on the preliminary results on (i) measurements of TL sensitivity to UV exposure in a natural borate (ulexite) to determine its potential use as a UV dosimeter, (ii) how the UV exposure at different controlled temperatures (room temperature (RT), 50°C and 100°C) affects the TL glow emission, and (iii) using the thermal stability with the T stop method (up to 260°C) to check the trap structure.…”

Section: Introductionmentioning

confidence: 99%