Zobrazeno 1 - 10
of 378
pro vyhledávání: '"PEARSON, M. R."'
Autor:
Karner, V. L., Chatzichristos, A., Cortie, D. L., Fujimoto, D., Kiefl, R. F., Levy, C. D. P., Li, R., McFadden, R. M. L., Morris, G. D., Pearson, M. R., Benckiser, E., Boris, A. V., Cristiani, G., Logvenov, G., Keimer, B., MacFarlane, W. A.
Publikováno v:
Phys. Rev. B 104, 205114 (2021)
Using ion-implanted $^8$Li $\beta$-detected NMR, we study the evolution of the correlated metallic state of LaNiO$_3$ in a series of LaNiO$_3$/LaAlO$_3$ superlattices as a function of bilayer thickness. Spin-lattice relaxation measurements in an appl
Externí odkaz:
http://arxiv.org/abs/2106.00211
Autor:
Chatzichristos, A., McFadden, R. M. L., Dehn, M. H., Dunsiger, S. R., Fujimoto, D., Karner, V. L., McKenzie, I., Morris, G. D., Pearson, M. R., Stachura, M., Sugiyama, J., Ticknor, J. O., MacFarlane, W. A., Kiefl, R. F.
Publikováno v:
Phys. Rev. Lett. 123, 095901 (2019)
We report measurements of the diffusion rate of isolated ion-implanted $^{8}$Li$^{+}$ within $\sim$120 nm of the surface of oriented single-crystal rutile TiO$_2$ using a radiotracer technique. The $\alpha$-particles from the $^{8}$Li decay provide a
Externí odkaz:
http://arxiv.org/abs/1810.12537
Autor:
Rebeiro, B. M., Triambak, S., Mabika, P. Z., Finlay, P., Sumithrarachchi, C. S., Hackman, G., Ball, G. C., Garrett, P. E., Svensson, C. E., Cross, D. S., Dunlop, R., Garnsworthy, A. B., Kshetri, R., Orce, J. N., Pearson, M. R., Tardiff, E. R., Al-Falou, H., Austin, R. A. E., Churchman, R., Djongolov, M. K., D'Entremont, R., Kierans, C., Milovanovic, L., O'Hagan, S., Reeve, S., Sjue, S. K. L., Williams, S. J., Ntshangase, S. S.
Publikováno v:
Phys. Rev. C 99, 065502 (2019)
We used the 8$\pi$ $\gamma$-ray spectrometer at the TRIUMF-ISAC radiocative ion beam facility to obtain high-precision branching ratios for $^{19}$Ne $\beta^+$ decay to excited states in $^{19}$F. Together with other previous work, our measurements d
Externí odkaz:
http://arxiv.org/abs/1810.02331
Autor:
Kalita, M. R., Behr, J. A., Gorelov, A., Pearson, M. R., DeHart, A. C., Gwinner, G., Kossin, M. J., Orozco, L. A., Aubin, S., Gomez, E., Safronova, M. S., Dzuba, V. A., Flambaum, V. V.
Publikováno v:
Phys. Rev. A 97, 042507 (2018)
We observe the electric-dipole forbidden $7s\rightarrow8s$ transition in the francium isotopes $^{208-211}$Fr and $^{213}$Fr using a two-photon excitation scheme. We collect the atoms online from an accelerator and confine them in a magneto optical t
Externí odkaz:
http://arxiv.org/abs/1710.07604
Autor:
Chatzichristos, A., McFadden, R. M. L., Karner, V. L., Cortie, D. L., Levy, C. D. P., MacFarlane, W. A., Morris, G. D., Pearson, M. R., Salman, Z., Kiefl, R. F.
Publikováno v:
Phys. Rev. B 96, 014307 (2017)
We report a comparison of the $1/T_1$ spin lattice relaxation rates (SLR) for $^9Li$ and $^8Li$ in Pt and SrTiO$_{3}$, in order to differentiate between magnetic and electric quadrupolar relaxation mechanisms. In Pt, the ratio of the $1/T_{1}$ spin r
Externí odkaz:
http://arxiv.org/abs/1703.10156
Autor:
Zhang, J., Collister, M. Tandecki. R., Aubin, S., Behr, J. A., Gomez, E., Gwinner, G., Orozco, L. A., Pearson, M. R., Sprouse, G. D.
We have measured the hyperfine splitting of the $7P_{1/2}$ state at the 100 ppm level in Fr isotopes ($^{206g,206m, 207, 209, 213, 221}$Fr) near the closed neutron shell ($N$ = 126 in $^{213}$Fr). The measurements in five isotopes and a nuclear isome
Externí odkaz:
http://arxiv.org/abs/1507.04668
Akademický článek
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Offline trapping of $^{221}$Fr in a magneto-optical trap from implantation of an $^{225}$Ac ion beam
Autor:
Tandecki, M., Zhang, J., Aubin, S., Behr, J. A., Collister, R., Gomez, E., Gwinner, G., Heggen, H., Lassen, J., Orozco, L. A., Pearson, M. R., Raeder, S., Teigelhöfer, A.
Publikováno v:
2014 JINST 9 P10013
We demonstrate a new technique to prepare an offline source of francium for trapping in a magneto-optical trap. Implanting a radioactive beam of $^{225}$Ac, $t_{1/2} = 9.920(3)$ days, in a foil, allows use of the decay products, i.e.$^{221}$Fr, $t_{1
Externí odkaz:
http://arxiv.org/abs/1410.0042
Autor:
Tandecki, M., Zhang, J., Collister, R., Aubin, S., Behr, J. A., Gomez, E., Gwinner, G., Orozco, L. A., Pearson, M. R.
Publikováno v:
2013 JINST 8 P12006
We report on the successful commissioning of the Francium Trapping Facility at TRIUMF. Large laser-cooled samples of francium are produced from a francium ion beam delivered by the ISAC radioactive ion beam facility. The ion beam is neutralized on an
Externí odkaz:
http://arxiv.org/abs/1312.3562
Autor:
Kwiatkowski, A. A., Brunner, T., Holt, J. D., Chaudhuri, A., Chowdhury, U., Eibach, M., Engel, J., Gallant, A. T., Grossheim, A., Horoi, M., Lennarz, A., Macdonald, T. D., Pearson, M. R., Schultz, B. E., Simon, M. C., Senkov, R. A., Simon, V. V., Zuber, K., Dilling, J.
Publikováno v:
Phys.Rev.C89:045502,2014
We report a direct measurement of the Q-value of the neutrinoless double-beta-decay candidate 48Ca at the TITAN Penning-trap mass spectrometer, with the result that Q = 4267.98(32) keV. We measured the masses of both the mother and daughter nuclides,
Externí odkaz:
http://arxiv.org/abs/1308.3815