Evidence map›Paper›PMID 40904742›Full record

ReviewSpace science reviews2025

The Psyche Gamma-Ray and Neutron Spectrometer.

David J Lawrence, John O Goldsten, Patrick N Peplowski, Morgan T Burks, Shuo Cheng, Michael J Cully, Jordan M Effron, Linda T Elkins-Tanton, Raymond C Espiritu, Samuel G Fix and 12 more

Abstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Space science reviews, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Review
  5. The Psyche Light Elements Investigation.Space science reviews · 2025
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

22 authors.

David J LawrenceJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.ORCID 0000-0002-7696-6667
John O GoldstenJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Patrick N PeplowskiJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Morgan T BurksLawrence Livermore National Laboratory, Livermore, CA USA.
Shuo ChengJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Michael J CullyJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Jordan M EffronJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Linda T Elkins-TantonSchool of Earth and Space Exploration, Arizona State University, Tempe, AZ USA.
Raymond C EspirituJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Samuel G FixJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Milena B GrazianoJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Erin M HofferJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Insoo JunJet Propulsion Laboratory/California Institute of Technology, Pasadena, CA USA.
Geon-Bo KimLawrence Livermore National Laboratory, Livermore, CA USA.
Nathan R HinesLawrence Livermore National Laboratory, Livermore, CA USA.
Mark T LeBlancJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Evan M LivingstoneJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Kathryn M MarcotteJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Timothy J McCoyNational Museum of Natural History, Smithsonian Institution, Washington, DC USA.
Carol A PolanskeyJet Propulsion Laboratory/California Institute of Technology, Pasadena, CA USA.
Meena SreekantamurthyJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.
Zachary W YokleyJohns Hopkins University Applied Physics Laboratory, Laurel, MD USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A Gamma-Ray and Neutron Spectrometer (GRNS) instrument has been developed as part of the science payload for NASA's Discovery Program Psyche mission to the M-class asteroid (16) Psyche. The GRNS instrument is designed to measure the elemental composition of Psyche with the goal to understand the origin of this mysterious, potentially metal-rich planetary body. The GRNS will measure the near-surface abundances for the elements Ni, Fe, Si, K, S, Al, and Ca, as well as the spatial distribution of Psyche's metal-to-silicate fraction (or metal fraction). These measurements address three of the five Psyche mission science objectives: determine if Psyche is a core; determine whether small metal bodies incorporate light elements into the metal phase; and determine whether Psyche was formed under reducing conditions. The Gamma-Ray Spectrometer (GRS) uses a cryocooled, high-purity Ge (HPGe) sensor to detect cosmic-ray generated gamma rays in the 60 to 9000-keV energy range. The HPGe sensor is surrounded by a borated plastic anticoincidence shield that provides three functions: active background rejection from charged particle interactions in the HPGe sensor; fast neutron measurements; and direct measurements of the incident galactic cosmic ray flux. The Neutron Spectrometer (NS) uses three

Identifiers

PMID40904742
PMCPMC12402037

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.