Zobrazeno 1 - 10
of 424
pro vyhledávání: '"Pellin, Michael"'
Autor:
Liu, Nan, Stephan, Thomas, Cristallo, Sergio, Gallino, Roberto, Boehnke, Patrick, Nittler, Larry R., Alexander, Conel M. O. 'D., Davis, Andrew M., Trappitsch, Reto, Pellin, Michael J., Dillmann, Iris
We report Mo isotopic compositions of 37 presolar SiC grains of types Y (19) and Z (18), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. Direct comparison of the Y and Z grain data with d
Externí odkaz:
http://arxiv.org/abs/1906.10776
Autor:
Liu, Nan, Stephan, Thomas, Boehnke, Patrick, Nittler, Larry R., Meyer, Bradley S., Alexander, Conel M. O'D., Davis, Andrew M., Trappitsch, Reto, Pellin, Michael J.
We report Mo isotopic data for 16 15N-rich presolar SiC grains of type AB (14N/15N
Externí odkaz:
http://arxiv.org/abs/1801.08954
Autor:
Liu, Nan, Stephan, Thomas, Boehnke, Patrick, Nittler, Larry R., Alexander, Conel M. O'D., Wang, Jianhua, Davis, Andrew M., Trappitsch, Reto, Pellin, Michael J.
We report Mo isotopic data of 27 new presolar SiC grains, including 12 14N-rich AB (14N/15N>440, AB2) and 15 mainstream (MS) grains, and their correlated Sr and Ba isotope ratios when available. Direct comparison of the data for the MS grains, which
Externí odkaz:
http://arxiv.org/abs/1707.00084
Autor:
Becker, Chaoyue, Posen, Samuel, Groll, Nickolas, Cook, Russell, Schlepuetz, Christian M., Hall, Daniel Leslie, Liepe, Matthias, Pellin, Michael, Zasadzsinski, John, Proslier, Thomas
Publikováno v:
Applied Physics Letters 106, 082602 (2015)
We present an analysis of the Nb3Sn surface layers grown on a bulk niobium (Nb) coupon prepared at the same time and by the same vapor diffusion process used to make Nb3Sn coatings on 1.3 GHz cavities. Tunneling spectroscopy reveals a well-developed,
Externí odkaz:
http://arxiv.org/abs/1503.03410
Autor:
Liu, Nan, Davis, Andrew M., Gallino, Roberto, Savina, Michael R., Bisterzo, Sara, Gyngard, Frank, Pellin, Michael J., Dauphas, Nicolas
We identify three isotopic tracers that can be used to constrain the $^{13}C$-pocket and show the correlated isotopic ratios of Sr and Ba in single mainstream presolar SiC grains. These newly measured data can be explained by postprocess AGB model ca
Externí odkaz:
http://arxiv.org/abs/1502.02732
Autor:
Bhattacharya, Sumit a, ⁎, Mo, Kun a, Mei, Zhigang a, Seidman, David b, Stepnik, Bertrand c, Pellin, Michael J. a, Yacout, Abdellatif M. a
Publikováno v:
In Applied Surface Science 15 December 2020 533
Autor:
Liu, Nan, Savina, Michael R., Gallino, Roberto, Davis, Andrew M., Bisterzo, Sara, Gyngard, Frank, Kaeppeler, Franz, Cristallo, Sergio, Dauphas, Nicolas, Pellin, Michael J., Dillmann, Iris
We present strontium, barium, carbon, and silicon isotopic compositions of 61 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing both strontium and barium contaminati
Externí odkaz:
http://arxiv.org/abs/1501.05883
Autor:
Liu, Nan, Gallino, Roberto, Bisterzo, Sara, Davis, Andrew M., Savina, Michael R., Pellin, Michael J.
We present postprocess AGB nucleosynthesis models with different $^{13}$C-pocket internal structures to better explain zirconium isotope measurements in mainstream presolar SiC grains by Nicolussi et al. (1997) and Barzyk et al. (2007). We show that
Externí odkaz:
http://arxiv.org/abs/1405.1441
Autor:
Liu, Nan, Savina, Michael R., Davis, Andrew M., Gallino, Roberto, Straniero, Oscar, Gyngard, Frank, Pellin, Michael J., Willingham, David G., Dauphas, Nicolas, Pignatari, Marco, Bisterzo, Sara, Cristallo, Sergio, Herwig, Falk
Publikováno v:
Liu, N., Savina, M. R., Davis, A. M., et al. 2014, ApJ, 786, 66
We present barium, carbon, and silicon isotopic compositions of 38 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing barium contamination. Strong depletions in $\del
Externí odkaz:
http://arxiv.org/abs/1403.4336
Autor:
Groll, Nickolas, Klug, Jeffrey A., Cao, Chaoyue, Altin, Serdar, Claus, Helmut, Becker, Nicholas G., Zasadzinski, John F., Pellin, Michael J., Proslier, Thomas
A tunneling spectroscopy study is presented of superconducting MoN and Nb$_{0.8}$Ti$_{0.2}$N thin films grown by atomic layer deposition (ALD). The films exhibited a superconducting gap of 2meV and 2.4meV respectively with a corresponding critical te
Externí odkaz:
http://arxiv.org/abs/1312.6144