Abstract We propose a method for searching dark matter axion in axion-photon conversion. We consider a superconductor of cylindrical shape under strong magnetic field. The dark matter axion generates oscillating electric field which induces oscillating superconducting current in the surface of the superconductor. The current gives rise to dipole radiation with the frequency m a / 2 π given by axion mass m a . We show that the radiation flux generated by the current is of the order of 10 − 18 W under magnetic field ∼3 T in the case of radius 1 cm and length 10 cm of the cylindrical superconductor. The large amount of the radiation flux arises because Cooper pairs with large number density ( ∼ 10 22 / cm 3 ) is present in the superconductor. With the high detection sensitivity, we can simultaneously search wide bandwidth of the radio frequency with existing radio telescope.

中文翻译：

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一种用圆柱形超导体检测轴子的新方法

摘要 我们提出了一种在轴子-光子转换中寻找暗物质轴子的方法。我们考虑强磁场下的圆柱形超导体。暗物质轴子产生振荡电场，在超导体表面感应出振荡超导电流。电流产生偶极子辐射，频率 ma / 2 π 由轴子质量 ma 给出。我们表明，在圆柱形超导体的半径为 1 cm 和长度为 10 cm 的情况下，在磁场 ~3 T 下，电流产生的辐射通量约为 10 - 18 W。产生大量辐射通量是因为超导体中存在具有大数密度（～10 22 / cm 3 ）的库珀对。检测灵敏度高，