Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Savin, Daniel W."'
Autor:
Fairchild, Alexander J., Hell, Natalie, Beiersdorfer, Peter, Brown, Gregory V., Eckart, Megan E., Hahn, Michael, Savin, Daniel W.
Solar physicists routinely utilize observations of Ar-like Fe IX and Cl-like Fe X emission to study a variety of solar structures. However, unidentified lines exist in the Fe IX and Fe X spectra, greatly impeding the spectroscopic diagnostic potentia
Externí odkaz:
http://arxiv.org/abs/2408.14454
Autor:
Kálosi, Ábel, Grieser, Manfred, Isberner, Leonard W., Kreckel, Holger, Larson, Åsa, Neufeld, David A., Orel, Ann E., Paul, Daniel, Savin, Daniel W., Schippers, Stefan, Schmidt, Viviane C., Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
We have experimentally studied dissociative recombination (DR) of electronically and vibrationally relaxed ArH$^+$ in its lowest rotational levels, using an electron--ion merged-beams setup at the Cryogenic Storage Ring. We report measurements for th
Externí odkaz:
http://arxiv.org/abs/2408.06808
Autor:
Bu, Caixia, Morrissey, Liam S., Bostick, Benjamin C., Burger, Matthew H., Bowen, Kyle P., Chillrud, Steven N., Domingue, Deborah L., Dukes, Catherine A., Ebel, Denton S., Harlow, George E., Hillenbrand, Pierre-Michel, Ivanov, Dmitry A., Killen, Rosemary M., Ross, James M., Schury, Daniel, Tucker, Orenthal J., Urbain, Xavier, Zhang, Ruitian, Savin, Daniel W.
We have measured the absolute doubly differential angular sputtering yield for 20 keV Kr+ impacting a polycrystalline Cu slab at an incidence angle of {\theta}i = 45{\deg} relative to the surface normal. Sputtered Cu atoms were captured using collect
Externí odkaz:
http://arxiv.org/abs/2312.12208
One of the demanding frontiers in ultracold science is identifying laser cooling schemes for complex atoms and molecules, out of their vast spectra of internal states. Motivated by a need to expand the set of available ultracold molecules for applica
Externí odkaz:
http://arxiv.org/abs/2311.08381
Autor:
Kálosi, Ábel, Gamer, Lisa, Grieser, Manfred, von Hahn, Robert, Isberner, Leonard W., Jäger, Julia I., Kreckel, Holger, Neufeld, David A., Paul, Daniel, Savin, Daniel W., Schippers, Stefan, Schmidt, Viviane C., Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
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
Externí odkaz:
http://arxiv.org/abs/2309.17015
Publikováno v:
J. Phys. Chem. A 2023, 127, 39, 8194-8199
We report on a cycling scheme for Doppler cooling of trapped OH$^+$ ions using transitions between the electronic ground state $X^3\Sigma^-$ and the first excited triplet state $A^3\Pi$. We have identified relevant transitions for photon cycling and
Externí odkaz:
http://arxiv.org/abs/2308.14729
Autor:
Paul, Daniel, Grieser, Manfred, Grussie, Florian, von Hahn, Robert, Isberner, Leonard W., Kálosi, Ábel, Krantz, Claude, Kreckel, Holger, Müll, Damian, Neufeld, David A., Savin, Daniel W., Schippers, Stefan, Wilhelm, Patrick, Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
Observations of CH$^+$ are used to trace the physical properties of diffuse clouds, but this requires an accurate understanding of the underlying CH$^+$ chemistry. Until this work, the most uncertain reaction in that chemistry was dissociative recomb
Externí odkaz:
http://arxiv.org/abs/2208.14927
Publikováno v:
Phys. Rev. A 105, L051301 (2022)
We report on a scheme for laser cooling of $^{12}$C$_2$. We have calculated the branching ratios for cycling and repumping transitions and calculated the number of photon scatterings required to achieve deflection and laser cooling of a beam of $C_2$
Externí odkaz:
http://arxiv.org/abs/2112.10745
Autor:
Corrales, Lia, Valencic, Lynne, Costantini, Elisa, Garcia, Javier, Gatuzz, Efrain, Kallman, Tim, Lee, Julia, Schulz, Norbert, Zeegers, Sascha, Canizares, Claude, Draine, Bruce, Heinz, Sebastian, Hodges-Kluck, Edmund, Jenkins, Edward B., Paerels, Frits, Smith, Randall K., Temim, Tea, Wilms, Joern, Savin, Daniel W.
X-ray absorption fine structure (XAFS) in the 0.2-2 keV band is a crucial component in multi-wavelength studies of dust mineralogy, size, and shape -- parameters that are necessary for interpreting astronomical observations and building physical mode
Externí odkaz:
http://arxiv.org/abs/1904.12790
Autor:
Hillenbrand, Pierre-Michel, Bowen, Kyle P., Liévin, Jacques, Urbain, Xavier, Savin, Daniel W.
Publikováno v:
Astrophys. J. 877 (2019) 38
Deuterated molecules are important chemical tracers of prestellar and protostellar cores. Up to now, the titular reaction has been assumed to contribute to the generation of these deuterated molecules. We have measured the merged-beams rate coefficie
Externí odkaz:
http://arxiv.org/abs/1904.02955