Spherical Bessel j
From specialfunctionswiki
The spherical Bessel function of the first kind is defined by $$j_{\nu}(z)=\sqrt{\dfrac{\pi}{2z}}J_{\nu + \frac{1}{2}}(z),$$ where $J_{\nu}$ denotes the Bessel function of the first kind.
Domain coloring of $j_0$.
Properties
Relationship between spherical Bessel j sub nu and sine
References
Spherical Bessel $j_{\nu}$