Zobrazeno 1 - 10
of 1 376
pro vyhledávání: '"Landers J"'
Publikováno v:
A&A, 670, A6 (2023)
In laboratory experiments, we heated chondritic material up to 1400K in a hydrogen atmosphere. Moessbauer spectroscopy and magnetometry reveal that, at high temperatures, metallic iron forms from silicates. The transition temperature is about 1200K a
Externí odkaz:
http://arxiv.org/abs/2301.12910
In previous laboratory experiments, we measured the temperature dependence of sticking forces between micrometer grains of chondritic composition. The data showed a decrease in surface energy by a factor ~5 with increasing temperature. Here, we focus
Externí odkaz:
http://arxiv.org/abs/2108.08034
Publikováno v:
A&A, 638, A151 (2020)
Sticking properties rule the early phases of pebble growth in protoplanetary discs in which grains regularly travel from cold, water-rich regions to the warm inner part. This drift affects composition, grain size, morphology, and water content as gra
Externí odkaz:
http://arxiv.org/abs/2007.00997
Autor:
Gruner, M. E., Keune, W., Landers, J., Salamon, S., Krautz, M., Zhao, J., Hu, M. Y., Toellner, T., Alp, E. E., Gutfleisch, O., Wende, H.
We investigate the origin of the volume change and magnetoelastic interaction observed at the magnetic first-order transition in the magnetocaloric system La(Fe$_{1-x}$Si$_x$)$_{13}$ by means of first-principles calculations combined with the fixed-s
Externí odkaz:
http://arxiv.org/abs/1708.08304
Publikováno v:
In Personality and Individual Differences 15 April 2020 157
Autor:
Battat, J. B. R., Brack, J., Daw, E., Dorofeev, A., Ezeribe, A. C., Gauvreau, J. -L., Gold, M., Harton, J. L., Landers, J. M., Law, E., Lee, E. R., Loomba, D., Lumnah, A., Matthews, J. A. J., Miller, E. H., Monte, A., Mouton, F., Murphy, A. StJ., Paling, S. M., Phan, N., Robinson, M., Sadler, S. W., Scarff, A., Schuckman, F., Snowden-Ifft, D. P., Spooner, N. J. C., Telfer, S., Vahsen, S. E., Walker, D., Warner, D., Yuriev, L.
The addition of O2 to gas mixtures in time projection chambers containing CS2 has recently been shown to produce multiple negative ions that travel at slightly different velocities. This allows a measurement of the absolute position of ionising event
Externí odkaz:
http://arxiv.org/abs/1410.7821
Autor:
Gruner, M. E., Keune, W., Cuenya, B. Roldan, Weis, C., Landers, J., Makarov, S. I., Klar, D., Hu, M. Y., Alp, E. E., Zhao, J., Krautz, M., Gutfleisch, O., Wende, H.
Publikováno v:
Phys. Rev. Lett. 114, 057202 (2015)
By combination of two independent approaches, nuclear resonant inelastic X-ray scattering and first-principles calculations in the framework of density functional theory, we determine the element-resolved vibrational density of states in the ferromag
Externí odkaz:
http://arxiv.org/abs/1408.4009
Autor:
Battat, J. B. R., Brack, J., Daw, E., Dorofeev, A., Ezeribe, A. C., Fox, J. R., Gauvreau, J. -L., Gold, M., Harmon, L. J., Harton, J. L., Landers, J. M., Lee, E. R., Loomba, D., Matthews, J. A. J., Miller, E. H., Monte, A., Murphy, A. StJ., Paling, S. M., Phan, N., Pipe, M., Robinson, M., Sadler, S. W., Scarff, A., Snowden-Ifft, D. P., Spooner, N. J. C., Telfer, S., Walker, D., Warner, D., Yuriev, L.
Radon gas emanating from materials is of interest in environmental science and also a major concern in rare event non-accelerator particle physics experiments such as dark matter and double beta decay searches, where it is a major source of backgroun
Externí odkaz:
http://arxiv.org/abs/1407.3938
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Autor:
Brack, J., Daw, E., Dorofeev, A., Ezeribe, A. C., Fox, J. R., Gauvreau, J. -L., Gold, M., Harmon, L. J., Harton, J., Lafler, R., Landers, J. M., Lauer, R., Lee, E. R., Loomba, D., Matthews, J. A. J., Miller, E. H., Monte, A., Murphy, A. StJ., Paling, S. M., Phan, N., Pipe, M., Robinson, M., Sadler, S., Scarff, A., Snowden-Ifft, D. P., Spooner, N. J. C., Telfer, S., Walker, D., Yuriev, L.
Low-pressure gas Time Projection Chambers being developed for directional dark matter searches offer a technology with strong particle identification capability combined with the potential to produce a definitive detection of Galactic Weakly Interact
Externí odkaz:
http://arxiv.org/abs/1307.5525