Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 7
Distraction; Confusion; Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Human Factors; Procedure
Aircraft X was a departure off of ZZZ going to INT IFR.  He advised INT in sight at 4100 about 18 miles northwest of INT; I coordinated with INT to clear the aircraft from his current position.  INT approved that so I cleared the aircraft for the visual approach to RWY 33 and shipped him to INT tower.  INT then launch Aircraft Y from runway 33 IFR on a 330 heading climbing to 4000.  I was busy at the time and I'm not sure if he checked in right away.When I radar identified him I turned him to a 020 heading climbing to 12000 and when I saw that was not going to work and separation would be lost I continued to turn to 090 but the aircraft didn't acknowledge.  I think the aircraft at that point were about 2 miles give or take and 600 feet.  I told the supervisor about the incident and he called INT tower and the CPC stated that they had all aircraft in sight and were applying visual separation.  They had issued traffic on departure.  I wish INT tower would have informed me that they were applying visual separation when they called the departure rolling.
GSO Controller reports of a loss of separation with an arrival and a departure aircraft.