  It has recently been observed that solar spicules covering almost of all
solar surface have strong magnetic field $B\sim 10^2$G. They are supposed to be
plasma jets emitted from chromosphere and they arrive up to $\sim 10^4$km.
Their electron number density is such that $n_e=10^{10}\rm cm^{-3}\sim
$$10^{12}\rm cm^{-3}$. Corresponding plasma frequency $m_p=\sqrt{e^2n_e/m_e}$ (
electron mass $m_e$ ) is nearly equal to axion mass $m_a=10^{-5}$eV$\sim
10^{-4}$eV. Thus, resonant radiation conversion of axion with the mass can
arise in the spicules. We show that radiations converted from axion dark matter
possess flux density $\sim 10^{-6}\mbox{Jy}(m_a/10^{-4}\mbox{eV})(B/3\times
10^2\rm G)^2$. The radiations show line spectrum with frequency $\simeq
24$GHz$(m_a/10^{-4}\rm eV)$. Our estimation has fewer ambiguities in physical
parameters than similar estimation in neutron stars because physical parameters
like electron number density have been more unambiguously observed in the sun.
But, much strong solar thermal radiations would preclude sensitive observations
of such radiations from the axions.
