function ret = initialPositionSampling(this)
    n = this.NumberOfAtoms;
    phi = 2 * pi * rand(n,1);
    rho = this.Beta * 0.5 * this.NozzleLength * sqrt(rand(n,1));
    ret = [-this.OvenDistance * ones(n,1), rho.*cos(phi), rho.*sin(phi)];
end