Homestake solar neutrino experiment
E727973
The Homestake solar neutrino experiment was a pioneering underground radiochemical detector in South Dakota that first measured solar neutrinos and revealed the solar neutrino problem, leading to major advances in neutrino physics.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Homestake solar neutrino experiment canonical | 1 |
| solar neutrino problem | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8363311 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Homestake solar neutrino experiment Context triple: [Raymond Davis Jr., experiment, Homestake solar neutrino experiment]
-
A.
experiments at the Sudbury Neutrino Observatory
Experiments at the Sudbury Neutrino Observatory were groundbreaking studies of solar neutrinos that provided key evidence for neutrino oscillations and the existence of neutrino mass.
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B.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
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C.
Sudbury Neutrino Observatory
The Sudbury Neutrino Observatory is a deep underground Canadian physics facility that made landmark measurements of solar neutrinos, providing key evidence for neutrino oscillations and mass.
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D.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
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E.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Homestake solar neutrino experiment Target entity description: The Homestake solar neutrino experiment was a pioneering underground radiochemical detector in South Dakota that first measured solar neutrinos and revealed the solar neutrino problem, leading to major advances in neutrino physics.
-
A.
experiments at the Sudbury Neutrino Observatory
Experiments at the Sudbury Neutrino Observatory were groundbreaking studies of solar neutrinos that provided key evidence for neutrino oscillations and the existence of neutrino mass.
-
B.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
-
C.
Sudbury Neutrino Observatory
The Sudbury Neutrino Observatory is a deep underground Canadian physics facility that made landmark measurements of solar neutrinos, providing key evidence for neutrino oscillations and mass.
-
D.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
-
E.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
radiochemical neutrino detector
ⓘ
solar neutrino experiment ⓘ underground physics experiment ⓘ |
| coLeader | John N. Bahcall NERFINISHED ⓘ |
| collaboration |
Brookhaven National Laboratory
NERFINISHED
ⓘ
South Dakota School of Mines and Technology NERFINISHED ⓘ University of Pennsylvania NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dataTakingMode | periodic extraction runs of argon-37 ⓘ |
| depth | about 1,478 meters underground ⓘ |
| detectionReaction | ν_e + 37Cl → 37Ar + e− ⓘ |
| detectorMass | about 615 tons of perchloroethylene ⓘ |
| detects | electron neutrinos from the Sun ⓘ |
| detectsFromSource | solar core ⓘ |
| duration | about 27 years ⓘ |
| endDate | 1994 ⓘ |
| energyThreshold | about 0.814 MeV ⓘ |
| field |
neutrino physics
ⓘ
particle astrophysics ⓘ solar physics ⓘ |
| foundFluxRelativeToTheory | about one-third of predicted solar neutrino flux ⓘ |
| influenced |
Kamiokande experiment
NERFINISHED
ⓘ
Sudbury Neutrino Observatory NERFINISHED ⓘ Super-Kamiokande experiment NERFINISHED ⓘ |
| laboratoryVolume | about 380 cubic meters of perchloroethylene ⓘ |
| legacy |
established solar neutrino detection as a field
ⓘ
triggered decades of research into neutrino properties ⓘ |
| locatedIn |
Lead, South Dakota
NERFINISHED
ⓘ
South Dakota NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| location | Homestake Mine NERFINISHED ⓘ |
| measuredQuantity | production rate of argon-37 atoms ⓘ |
| measures | solar neutrino flux ⓘ |
| method | radiochemical extraction of argon-37 ⓘ |
| motivation | test solar models using neutrino flux ⓘ |
| primaryNeutrinoSource |
7Be solar neutrinos
ⓘ
8B solar neutrinos ⓘ |
| principalInvestigator | Raymond Davis Jr. NERFINISHED ⓘ |
| providedEvidenceFor |
neutrino flavor change
ⓘ
neutrino oscillations ⓘ |
| recognizedBy | 2002 Nobel Prize in Physics to Raymond Davis Jr. NERFINISHED ⓘ |
| revealed | solar neutrino problem NERFINISHED ⓘ |
| startDate | 1967 ⓘ |
| status | completed ⓘ |
| targetIsotope | chlorine-37 ⓘ |
| targetMaterial | perchloroethylene ⓘ |
| usesDetectorType | radiochemical chlorine detector ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Homestake solar neutrino experiment Description of subject: The Homestake solar neutrino experiment was a pioneering underground radiochemical detector in South Dakota that first measured solar neutrinos and revealed the solar neutrino problem, leading to major advances in neutrino physics.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
solar neutrino problem