Conditions for obtaining positronium Bose–Einstein condensation in a micron-sized cavity
Conditions for obtaining positronium Bose–Einstein condensation in a micron-sized cavity
复制标题
在微米级空腔中获得正电子玻色爱因斯坦凝聚的条件
DOI:
10.1140/epjd/s10053-022-00427-1
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Mills, Jr., Allen P.
中科院分区:
文献类型:
--
作者:
Asaro, Marcus X.;Herrera, Steven;Fuentes-Garcia, Melina;Cecchini, Gabriel G.;Membreno, Erick E.;Greaves, Rod G.;Mills, Jr., Allen P.
The quest for making a triplet positronium (Ps) Bose–Einstein condensate confined in a micron-sized cavity in a material such as porous silica faces at least three interrelated problems: (1) Aboutspin polarized Ps atoms must be injected into a small cavity within a porous solid material without vaporizing it. (2) It is known that Ps atoms confined in 30–100 nm diameter cavities in porous silica do not remain in the gas phase, but become stuck to the cavity walls at room temperature (Cooper et al., Phys. Rev. B 97:205302, 2018). (3) Cooling a gas of Ps atoms to cryogenic temperatures by energy exchange with the walls would be a very slow process (Saito and Hyodo, in: Surko, Gianturco (eds) New Directions in Antimatter Chemistry and Physics, Springer Dordrecht, Netherlands, 2001) because of the relatively low collision rate with the walls and the large mismatch between the masses of the Ps and the wall atoms. A possible solution of these difficulties is presented, based on cooling the implanted positrons in an isotopically pure diamond single crystal target, subsequent saturating of the wall Ps coverage so that a substantial portion of the Ps will be in the gaseous state, and thermalizing the gas-phase Ps via collisions with the low effective mass wall Ps. A design process for the target material is outlined as well, including preliminary results in porous cavity fabrication using focused ion beam milling.Graphical abstract
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DOI:
10.1088/0953-4075/49/10/104001
发表时间:
2015
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
作者:
K. Shu;Xing Fan;T. Yamazaki;Toshio Namba;S. Asai;K. Yoshioka;M. Kuwata
通讯作者:
M. Kuwata
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
A. Mills;G. Brandes;D. Zuckerman;W. Liu;S. Berko
通讯作者:
S. Berko
DOI:
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发表时间:
1972
期刊:
影响因子:
--
作者:
D. Huet;J. Maneval;A. Zylbersztejn
通讯作者:
A. Zylbersztejn
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
G. Brandes;A. Mills
通讯作者:
A. Mills
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
O. O. Vasil’ev;V. Muratov;T. Duda
通讯作者:
T. Duda