# Sources for Ultraviolet Nuclear Spectroscopy of Thorium (SUNSPOT)

Source: https://welltoldgrants.com/grants/hr001125s0008-sources-for-ultraviolet-nuclear-spectroscopy-of-thorium/  
Official notice: https://www.grants.gov/search-results-detail/358401

> DARPA - Defense Sciences Office offered grants to the applicants described in the notice. Applications closed on March 13, 2025.

| Field | Value |
|---|---|
| Opportunity number | HR001125S0008 |
| Agency | DARPA - Defense Sciences Office |
| Status | Forecast |
| Deadline | March 13, 2025 |
| Award ceiling | not stated |
| Award floor | not stated |
| Expected awards | not stated |
| Total funding | not stated |
| Cost sharing | not required |
| Assistance Listings | 12.910 |

## Who can apply

- Others (see text field entitled "Additional Information on Eligibility" for clarification)

All responsible sources capable of satisfying the Government's needs may submit a proposal that shall be considered by DARPA. See the Eligibility Information section of the BAA for more information.

## What the grant funds

The Defense Advanced Research Projects Agency (DARPA) is soliciting innovative proposals in the development of highly coherent sources of vacuum ultraviolet (VUV) radiation for clock-grade spectroscopy of the recently discovered thorium (229m-Th) nuclear isomeric transition. Proposed research should investigate innovative approaches that enable revolutionary advances in science, devices, or systems. Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice.

## Questions people ask

### Is HR001125S0008 still open?

No. It closed on March 13, 2025. A newer notice is open: DARPARA2701, closes January 13, 2027 (67 days left).

### Who can apply for Sources for Ultraviolet Nuclear Spectroscopy of Thorium (SUNSPOT)?

DARPA - Defense Sciences Office accepted applications from the applicants described in the notice. The notice adds further conditions, so read its eligibility section.

### What is the deadline for Sources for Ultraviolet Nuclear Spectroscopy of Thorium (SUNSPOT)?

Closed March 13, 2025. Applications are no longer accepted; the program's newer notices are on this page when there are any.

### Who has won Research and Technology Development grants before?

The largest recipients over five fiscal years were University of Southern California, Clemson University, Massachusetts Institute of Technology. The program made 739 awards worth $1.5 billion in that time.