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Dual quasars are precursors of binary supermassive black holes, which areimportant objects for gravitational wave study, galaxy evolution, andcosmology. I report four double quasars, one of which is newly discovered, withseparations of 1$-$2 arcsec selected from the DECam Legacy Survey. The Geminioptical spectra confirm that both sources are quasars at the same redshifts.J0118$-$0104 and J0932+0722 are classified as dual quasars, whereas J0037+2058could be either a dual quasar or a lensed quasar. I estimate the physicalproperties such as black hole masses and Eddington ratios for the four doublequasars. The newly discovered system supplements the incomplete sample of dualquasars at $\sim$10 kpc at $z>0.5$. The results demonstrate that newhigh-quality imaging surveys with existing spectroscopic data could revealadditional small-scale double quasars. Combined with the dual quasars from theliterature, I find a power-law index of 1.45$\pm$0.48 for the distribution ofdual quasars as a function of separation between 5$-$20 kpc, steeper than thatexpected from dynamical friction, though it is likely due to the incompletesample at $<$15 kpc. I also discuss the implications for future searches withnew imaging surveys such as the Dark Energy Survey and the Legacy Survey ofSpace and Time.

Small-scale double quasars discovered in the DECam Legacy Survey