Low-temperature chemistry induced by cosmic rays: positive and negative ions desorption from nitrile-bearing astrophysical ice analogues

Autor: Ribeiro, Fabio de A, Almeida, Guilherme C, Wolff, Wania, Boechat-Roberty, Heloisa M, Rocco, Maria L M, da Silveira, Enio F

In cold core of dark molecular clouds, where the UV radiation from external sources is strongly attenuated, cosmic rays can induce chemical reactions on the surface of ice-covered grains promoting the ejection of the processed material to the gas pha

Externí odkaz: http://arxiv.org/abs/1912.12368

Energy and spectroscopic parameters of neutral and cations isomers of the CnH2 (n = 2–6) families using high‐level ab‐initio approaches.

Autor: Díaz Soto, Lenin J., Oliveira, Ricardo R., Baptista, Leonardo, da Silveira, Enio F., Nascimento, Marco Antonio Chaer

Publikováno v: Journal of Computational Chemistry; 12/15/2024, Vol. 45 Issue 32, p2793-2804, 12p

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Valine Radiolysis by H+, He+, N+, and S15+ MeV Ions

Autor: da Costa, Cíntia A. P., Vignoli Muniz, Gabriel S., Boduch, Philippe, Rothard, Hermann, da Silveira, Enio F.

Publikováno v: International Journal of Molecular Sciences
International Journal of Molecular Sciences, MDPI, 2020, 21 (5), pp.1893. ⟨10.3390/ijms21051893⟩
Volume 21
Issue 5
International Journal of Molecular Sciences, Vol 21, Iss 5, p 1893 (2020)
International Journal of Molecular Sciences, 2020, 21 (5), pp.1893. ⟨10.3390/ijms21051893⟩

Radiolysis of biomolecules by fast ions has interest in medical applications and astrobiology. The radiolysis of solid D-valine (0.2&ndash
2 &mu
m thick) was performed at room temperature by 1.5 MeV H+, He+, N+, and 230 MeV S15+ ion beams.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::4d390fcc3af620fce444bd3b9cdb8b2e
http://europepmc.org/articles/PMC7084508

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