How do I distribute a survey questionnaire to obtain a reasonable response rate?
The University you are affiliated with likely has a 'behavioural research ethics board' or some similar title as was pointed out by @GEdgar. Such surveys constitute behavioural research and require approval by an ethics committee. The ethics application will usually require that you provide information about how participant anonymity will be maintained (YES -- even if that's a 'given'), how/where you will store the data and for how long, and what you will do with the data. The application, in most cases, can be completed online. If you are not the PI, bring your PI in the loop and get them on board. If applicable, you will LIKELY -- not necessarily -- need them to 'sponsor' your endeavour.
Edit
It is okay once 'ethics' says it's okay, which it likely will. This is minimal risk behavioural research that will likely see a quick turn around time. Also, the ethics application will require that you share with them the survey you are distributing. As you likely know, if you are using Qualtrics (or equivalent), it should be straightforward to download the questionnaire/survey. Search &quot;YOUR INSTITUTION&quot; AND &quot;ETHICS&quot; on Google. No doubt, you will find the right contacts, and I'm sure they'd be delighted to provide you with additional information, such as sample applications.