Phosphor powder and light emitting device

A phosphor powder comprising

• an inorganic compound in which Eu as an activator is solid-soluted in a crystal represented by Ba26Si51O2N84 or in an inorganic crystal having the same crystal structure as the crystal represented by Ba26Si51O2N84,
• wherein D50 is equal to or more than 1 μm and equal to or less than 50 μm, the D50 is defined as a particle size at which a cumulative value is 50% in a volume frequency particle size distribution curve of the phosphor powder measured by a laser diffraction scattering method using a small amount of the phosphor powder injected to an aqueous solution to which 0.05% by weight of sodium hexametaphosphate added as a dispersant, and performed of a dispersing treatment with a horn-type ultrasound homogenizer to measure the particle size distribution,
• wherein in an emission spectrum obtained by irradiating the phosphor powder with excitation light having a wavelength of 450 nm, when a luminescence intensity at a peak wavelength in a range of equal to or more than 750 nm and equal to or less than 950 nm is P0, and when a luminescence intensity at a peak wavelength in a range of equal to or more than 520 nm and equal to or less than 600 nm is P1, 0.01≤P1/P0≤0.12 is satisfied by P0 and P1.