Antimatter research in space
نویسندگان
چکیده
منابع مشابه
Antimatter Research in Space
Two of the most compelling issues facing astrophysics and cosmology today are to understand the nature of the dark matter that pervades the universe and to understand the apparent absence of cosmological antimatter. For both issues, sensitive measurements of cosmic-ray antiprotons and positrons, in a wide energy range, are crucial. Many different mechanisms can contribute to antiprotons and pos...
متن کاملSearch for Antimatter in Space with the Alpha Magnetic Spectrometer
The Alpha Magnetic Spectrometer (AMS) is a state of the art particle physics experiment for the extraterrestrial study of antimatter, matter and missing matter. AMS successfully completed the precursor STS91 Discovery flight (June 2nd-12th, 1998), completing 152 orbits at ±52 of latitude and about 400 km of height, collecting more than 100 million CR events. In this paper we report on the first...
متن کاملCosmological Matter-antimatter Asymmetry and Antimatter in the Universe
Prediction of antimatter by Dirac (1928) and quick subsequent discovery of the first antimatter particle, positron, by Anderson 2 (1933) are among greatest scientific achievements of XX century. Discovery of antiproton 22 years later 3 was the next step which had opened a whole new world of antiparticles. Now for (almost) every elementary particle a corresponding antiparticle has also been obse...
متن کاملAntimatter in the Universe
The world in our neighbourhood, as we observe it, is 100% charge asymmetric. We see only matter and any considerable amount of antimatter nearby is excluded [1,2]. A small number of antiprotons and positrons in the cosmic rays (to say nothing of those produced in accelerators) can be prescribed to the secondary origin. Charge asymmetry in terms of visible massive matter defined as/3B = (riB -nf...
متن کاملAntimatter transport processes
A comparison of the 1S-2S transitions of hydrogen and antihydrogen will yield a stringent test of CPT conservation. Necessarily, the antihydrogen atoms need to be trapped to perform high precision spectroscopy measurements. Therefore, an approximately 0.75 T deep neutral atom trap, equivalent to about 0.5 K for ground state (anti)hydrogen atoms, has been superimposed on a Penning-Malmberg trap ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2003
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/29/5/311