Unit nb
Name nanobarn
Category Area
Details The nanobarn (nb) is a unit of area used in particle physics to describe the probability of a specific event occurring during a collision between particles, such as the scattering or absorption of particles. It is derived from the unit barn (b), which is equal to 10^-28 square meters.

A nanobarn is one billionth (10^-9) of a barn, and is therefore equal to 10^-37 square meters. The choice of this specific unit in particle physics stems from the fact that typical cross-section areas of atomic nuclei are on the order of 10^-28 square meters, making it an intuitively convenient scale to work with when dealing with phenomena at such small scales.
nb(nanobarn) to a(are)nb(nanobarn) to ab(attobarn)nb(nanobarn) to ac(acre)nb(nanobarn) to ac [US Survey](acre)nb(nanobarn) to am²(square attometre)nb(nanobarn) to b(barn)nb(nanobarn) to cb(centibarn)nb(nanobarn) to circular milnb(nanobarn) to cm²(square centimetre)nb(nanobarn) to dab(decabarn)nb(nanobarn) to dam²(square decametre)nb(nanobarn) to db(decibarn)nb(nanobarn) to dm²(square decimetre)nb(nanobarn) to Eb(exabarn)nb(nanobarn) to Em²(square exametre)nb(nanobarn) to fb(femtobarn)nb(nanobarn) to fm²(square femtometre)nb(nanobarn) to ft²(square foot)nb(nanobarn) to Gb(gigabarn)nb(nanobarn) to Gm²(square gigametre)nb(nanobarn) to ha(hectare)nb(nanobarn) to hb(hectobarn)nb(nanobarn) to hm²(square hectometre)nb(nanobarn) to in²(square inch)nb(nanobarn) to kb(kilobarn)nb(nanobarn) to km²(square kilometre)nb(nanobarn) to Mb(megabarn)nb(nanobarn) to mb(millibarn)nb(nanobarn) to mi²(square mile)nb(nanobarn) to Mm²(square megametre)nb(nanobarn) to mm²(square millimetre)nb(nanobarn) to m²(square metre)nb(nanobarn) to nm²(square nanometre)nb(nanobarn) to Pb(petabarn)nb(nanobarn) to pb(picobarn)nb(nanobarn) to Pm²(square petametre)nb(nanobarn) to pm²(square picometre)nb(nanobarn) to rainb(nanobarn) to roodnb(nanobarn) to squarenb(nanobarn) to square perchnb(nanobarn) to Tb(terabarn)nb(nanobarn) to Tm²(square terametre)nb(nanobarn) to yb(yoctobarn)nb(nanobarn) to Yb(yottabarn)nb(nanobarn) to yd²(square yard)nb(nanobarn) to ym²(square yoctometre)nb(nanobarn) to Ym²(square yottametre)nb(nanobarn) to zb(zeptobarn)nb(nanobarn) to Zb(zettabarn)nb(nanobarn) to zm²(square zeptometre)nb(nanobarn) to Zm²(square zettametre)nb(nanobarn) to µb(microbarn)nb(nanobarn) to µm²(square micrometre)