Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Daniel W. Savin"'
Autor:
Camilo Jaramillo-Correa, Neil C. Pearson, Deborah Domingue, Daniel W. Savin, Roger N. Clark, Faith Vilas, Amanda R. Hendrix
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 10, p 229 (2024)
Bombardment by solar wind ions is one of the main drivers of space weathering on airless bodies. Here, we simulate the solar-wind-driven spectral alteration of loosely packed olivine powders by irradiation with 1.2 keV helium ions (He ^+ ). We measur
Externí odkaz:
https://doaj.org/article/8701007f56d342d5b836c9653ca96f65
Autor:
Harald Krüger, Michelle S. Thompson, Masanori Kobayashi, Valeria Mangano, Martina Moroni, Anna Milillo, Lindsay P. Keller, Sho Sasaki, Joe Zender, Deborah Domingue, Johannes Benkhoff, André Galli, François LeBlanc, Go Murakami, Menelaos Sarantos, Daniel W. Savin
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 2, p 36 (2024)
We provide an overview of our understanding of the dust environment at Mercury and the role that dust plays in shaping the planet's surface and exosphere. Our understanding of the role that dust impacts play in the generation of Mercury's atmosphere
Externí odkaz:
https://doaj.org/article/527c225b9bdf4b6fb3603ec075054755
Autor:
Ábel Kálosi, Lisa Gamer, Manfred Grieser, Robert von Hahn, Leonard W. Isberner, Julia I. Jäger, Holger Kreckel, David A. Neufeld, Daniel Paul, Daniel W. Savin, Stefan Schippers, Viviane C. Schmidt, Andreas Wolf, Mark G. Wolfire, Oldřich Novotný
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 2, p L26 (2023)
Observations of OH ^+ are used to infer the interstellar cosmic ray ionization rate in diffuse atomic clouds, thereby constraining the propagation of cosmic rays through and the shielding by interstellar clouds, as well as the low energy cosmic ray s
Externí odkaz:
https://doaj.org/article/ee44bbeaed5f4d07a0540f0350257bd7
Autor:
Rosemary M. Killen, Liam S. Morrissey, Matthew H. Burger, Ronald J. Vervack Jr., Orenthal J. Tucker, Daniel W. Savin
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 4, p 78 (2023)
Externí odkaz:
https://doaj.org/article/7443b76faa1946f9892942c846cfe226
Autor:
Liam S. Morrissey, Micah J. Schaible, Orenthal J. Tucker, Paul S. Szabo, Giovanni Bacon, Rosemary M. Killen, Daniel W. Savin
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 4, p 67 (2023)
Solar wind (SW) ion irradiation on airless bodies can play an important role in altering their surface properties and surrounding exosphere. Much of the ion sputtering data needed for exosphere studies come from binary collision approximation sputter
Externí odkaz:
https://doaj.org/article/acf93029e4a340d1bac82bda60d4fae4
Autor:
Peter Beiersdorfer, Jaan K. Lepson, Gregory V. Brown, Natalie Hell, Elmar Träbert, Michael Hahn, Daniel W. Savin
Publikováno v:
Atoms, Vol 10, Iss 4, p 148 (2022)
A multitude of weaker Fe IX lines have been predicted in the vicinity of the strong 171 Å line that dominates the spectra of many astrophysical and laboratory sources. Some of these weaker lines have only recently been identified in the laboratory,
Externí odkaz:
https://doaj.org/article/402c0ef04f14474a898eb15d358ee857
Autor:
Elmar Träbert, Peter Beiersdorfer, Gregory V. Brown, Natalie Hell, Jaan K. Lepson, Alexander J. Fairchild, Michael Hahn, Daniel W. Savin
Publikováno v:
Atoms, Vol 10, Iss 4, p 115 (2022)
The Fe IX spectrum features two lines in the extreme ultraviolet whose ratio has been rated among the best density diagnostics in the solar spectrum. One line is an E1-allowed intercombination transition at 244.909 Å, the other an E1-forbidden M2 tr
Externí odkaz:
https://doaj.org/article/af3e8b4d6fee4dafac7c41b524f62835
Autor:
Camilo Jaramillo-Correa, Roger N. Clark, Deborah L. Domingue, Neil Pearson, Daniel W. Savin, Faith Vilas, Jean P. Allain, Amanda R. Hendrix
Introduction: The Toolbox for Research and Exploration (TREX) is a NASA SSERVI (Solar System Exploration Research Virtual Institute) node. TREX (trex.psi.edu) aims to develop tools and research methods for the exploration of airless bodies, specifica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::206552128e0397f4d97b95fb2a5130f8
https://doi.org/10.5194/epsc2022-735
https://doi.org/10.5194/epsc2022-735
Publikováno v:
Physical Review A. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::263f5a1465062dadefd9b5c2a46dfd42
https://doi.org/10.1103/physreva.105.l051301
https://doi.org/10.1103/physreva.105.l051301
Publikováno v:
Physical Review E. 105
We have inferred the energy distribution of trapped ions in an electron beam ion trap (EBIT) from simulations of the spatial distribution of Fe^{13+} ions and a comparison with measured visible light images of the ion cloud. We simulated the cloud of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f255353a50c6295ab5bb10e80f9dbf3
https://doi.org/10.1103/physreve.105.015204
https://doi.org/10.1103/physreve.105.015204