<P> Antimatter cannot be stored in a container made of ordinary matter because antimatter reacts with any matter it touches, annihilating itself and an equal amount of the container . Antimatter in the form of charged particles can be contained by a combination of electric and magnetic fields, in a device called a Penning trap . This device cannot, however, contain antimatter that consists of uncharged particles, for which atomic traps are used . In particular, such a trap may use the dipole moment (electric or magnetic) of the trapped particles . At high vacuum, the matter or antimatter particles can be trapped and cooled with slightly off - resonant laser radiation using a magneto - optical trap or magnetic trap . Small particles can also be suspended with optical tweezers, using a highly focused laser beam . </P> <P> In 2011, CERN scientists were able to preserve antihydrogen for approximately 17 minutes . </P> <P> Scientists claim that antimatter is the costliest material to make . In 2006, Gerald Smith estimated $250 million could produce 10 milligrams of positrons (equivalent to $25 billion per gram); in 1999, NASA gave a figure of $62.5 trillion per gram of antihydrogen . This is because production is difficult (only very few antiprotons are produced in reactions in particle accelerators), and because there is higher demand for other uses of particle accelerators . According to CERN, it has cost a few hundred million Swiss francs to produce about 1 billionth of a gram (the amount used so far for particle / antiparticle collisions). In comparison, to produce the first atomic weapon, the cost of the Manhattan Project was estimated at $23 billion with inflation during 2007 . </P> <P> Several studies funded by the NASA Institute for Advanced Concepts are exploring whether it might be possible to use magnetic scoops to collect the antimatter that occurs naturally in the Van Allen belt of the Earth, and ultimately, the belts of gas giants, like Jupiter, hopefully at a lower cost per gram . </P>

How much does it cost to create antimatter
find me the text answering this question