Yes, Technobabble is great.
Although it is impossible to get one field to be stronger at the outside than in the center, multiple fields could be placed in order to enhace the edges of the containing field. Then, theoretically, so long as the apparatus remains in place, the outside would be stronger than the center.
In order to contain a chanceon, I believe we would require the synthesis of a new metal - Riggite. Perhaps you've heard of it? It is so dense that a single gram of it would collapse into the Earth's core and punch out the other side, even though it should simply oscillate between the entry and exit point (it is so dense that standard physics do not apply).
Only by using 10^-50 Kg, contained in a 10,000 Tesla magnetic field, can the chanceons be attracted to the raw density of the Riggite. Once the Riggite is completely saturated by chanceons, it has to be removed by teams in specially designed suits laced with Predictibilium, which is highly toxic. The teams can only be working for one hour before they contract Predictibilium poisoning, not a good way to go, as seen in the infamous Osaka Incident.
To not lace the suits is even worse, because then the chanceons can irradiate the teams, as shown in the Auckland Debacle.
Furthermore, this only solves the problem of containing chanceons. Artificial synthesis is a much more difficult task, as the only attempt so far resulted in the near destruction of Essen, prevented only by Dr. Bohm's sacrifice, wherein he took a raw kilo of Predictibilium and entered the chamber, neutralizing the chanceons at the cost of his life.
God. we're insane.

