Detection element, radiation detection device, and compton camera

A detection element comprising;

• a plurality of exposed electrodes exposed on first surface side of an insulating substrate, the plurality of exposed electrodes including a first exposed electrode, a second exposed electrode provided in first direction with respect to the first exposed electrode, a third exposed electrode provided in second direction intersecting the first direction with respect to the first exposed electrode, and a fourth exposed electrode provided in the second direction with respect to the second exposed electrode and in the first direction with respect to the third exposed electrode;
• a first electrode pattern provided on second surface side opposite the first surface side of the insulating substrate, the first electrode pattern including at least a first pattern connected to the first exposed electrode and the second exposed electrode by the first through electrode, and a second pattern connected to the third exposed electrode and the fourth exposed electrode by the second through electrode;
• a second electrode pattern including a first exposed portion, the second electrode pattern including at least a third pattern provided along the second direction corresponding to the first exposed electrode and the third exposed electrode, and a fourth pattern provided along the second direction corresponding to the second exposed electrode and the fourth exposed electrode, and the first exposed portion exposed on the first surface side and provided in isolation from the exposed electrode;
• and
• a third electrode pattern having a second exposed portion, the third electrode pattern including at least a five pattern provided along the third direction connecting the first exposed electrode and the fourth exposed electrode, and provided so as to sandwich the third electrode pattern between the first electrode pattern and the second electrode pattern, the second exposed portion exposed on the first surface side and provided separately from the exposed electrode and the second electrode pattern.