# Towards Neutron Capture on Exotic Nuclei: Demonstrating $(d,p\gamma)$ as a Surrogate Reaction for $(n,\gamma)$

## TL;DR

This paper introduces a novel indirect method using the $(d,p\,\gamma)$ reaction to determine neutron-capture cross sections for short-lived, exotic nuclei, aiding nuclear astrophysics and societal applications.

## Contribution

It demonstrates the feasibility of using the $(d,p)$ transfer reaction as a surrogate to measure neutron-capture cross sections for unstable nuclei, supported by a benchmark study on $^{95}$Mo.

## Key findings

- Successful demonstration of the $(d,p)$ surrogate technique.
- Guidance for applying the method to short-lived isotopes.
- Potential to improve neutron-capture data for exotic nuclei.

## Abstract

The neutron-capture reaction plays a critical role in the synthesis of the elements in stars and is important for societal applications including nuclear power generation and stockpile-stewardship science. However, it is difficult - if not impossible - to directly measure neutron capture cross sections for the exotic, short-lived nuclei that participate in these processes. In this Letter we demonstrate a new technique which can be used to indirectly determine neutron-capture cross sections for exotic systems. This technique makes use of the $(d,p)$ transfer reaction, which has long been used as a tool to study the structure of nuclei. Recent advances in reaction theory, together with data collected using this reaction, enable the determination of neutron-capture cross sections for short-lived nuclei. A benchmark study of the $^{95}$Mo$(d,p)$ reaction is presented, which illustrates the approach and provides guidance for future applications of the method with short-lived isotopes produced at rare isotope accelerators.