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SPECTRO-POS

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Spectroscopy of positronium atom control and gravity measurements

"The metastable atomic system Positronium (Ps) can be useful for a wide variety of scientific investigations. These include QED tests via precision spectroscopy, the formation of antihydrogen, the creation of positron-atom bound s... ver más

28/02/2018

UNIVERSITY COLLEGE...

100K€

Presupuesto del proyecto: 100K€

Líder del proyecto

UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

Fecha límite participación Sin fecha límite de participación.

Ver 2 Participantes

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2018-02-28 No tenemos la información de la convocatoria

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2 Participantes

UNIVERSITY COLLEGE LONDON

100.00K€ | Lider

UNIVERSITY COLLEGE LONDON

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Líder del proyecto

UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

Presupuesto del proyecto 100K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto "The metastable atomic system Positronium (Ps) can be useful for a wide variety of scientific investigations. These include QED tests via precision spectroscopy, the formation of antihydrogen, the creation of positron-atom bound states and Ps molecules, probes of nano-porous and mesoporous materials, the generation of electron-positron plasmas and even the creation of Bose-Einstein condensed Ps. Moreover, long lived Rydberg states of Ps could provide a way to study antimatter gravity. However, being composed of a particle-antiparticle pair Ps is a short lived entity, and conducting such experiments can be very challenging. Recently the use of positron trapping technology has made it possible to generate high instantaneous positron currents, and thereby perform laser excitation of Ps and observe multipositronic effects (such as Ps-Ps scattering, Ps molecule formation and the self-polarization of a Ps gas via spin exchange quenching). This exciting work is opening the door to many new research areas, and the underlying methodology has yet to be fully refined. This project aims to build upon previous advances in this field of positronium physics by expanding the areas of study via new technological approaches and also via collaboration with other groups that have overlapping interests. In particular efforts will be made to create and manipulate longer lived (Rydberg) states of Ps using techniques that have already been developed for other atoms (especially H and He). This offers the possibility of manipulating or even trapping Ps atoms that will not self-annihilate. This in turn would bring into being a unique source of atoms for spectroscopic investigations and facilitate attempts to perform a measurement of the Ps gravitational free-fall. The latter may offer clues to help explain the apparent lack of antimatter in the Universe, which is currently one of the biggest mysteries in Physics."

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