Np
Actinide
Neptunium Kaiou-no-Matsuei
Neptunium Kaiou-no-Matsuei
Element 93. The first transuranium element ever created. Synthesized in 1940 by McMillan and Abelson at Berkeley by bombarding U-238 with neutrons. Named after Neptune, the next planet beyond Uranus (just as Np follows U). Np-237 has a 2.14-million-year half-life. A quiet yet formidable presence — both as a long-lived nuclear waste concern and a proliferation risk
Jungian Type: Type 4
Personality tendencies across 4 dimensions
内向 (I)22%外向 (E)
50
直観 (N)15%感覚 (S)
50
感情 (F)75%思考 (T)
50
知覚 (P)78%判断 (J)
50
Enneagram Detailed Scores
Score distribution across 9 types
Big Five Personality Traits
Personality analysis based on the 5-factor model
Alloy Characteristics
Personality traits from metal physical properties
💰Price & Economic Data
Market price and economic characteristics (as of 2026-02)
Price Range
Market Trends & Notes
使用済み核燃料からPUREX法で副産物として回収。Pu-238生産原料（NASA RTG用）として戦略的価値が高い。DOE同位体プログラムで研究用Np-237を限定供給。mg単位で数百ドル/mg規模
🎨Element Colors
Scientific basis of Neptunium Kaiou-no-Matsuei's colors
Colors of this element
銀色
#B0B0B0
紫色
#6A0DAD
緑色
#228B22
💑Compatible Materials
Materials with good metallurgical and personality compatibility
Career Interests & Suggestions
Based on Holland Code: ICE
1st I - Investigative
2nd C - Conventional
3rd E - Enterprising
1Nuclear Physicist / Atomic Researcher
2Data Scientist
3Strategy Consultant
4Cryptographer / Security Researcher
5Astrophysicist
6AI Researcher / ML Engineer
Based on RIASEC (Holland Code) vocational interest model. These are illustrative suggestions derived from the character's personality profile.