CAL. PEN. CODE § 261 : California Code - Section 261

(a) Rape is an act of sexual intercourse accomplished with a person not the spouse of the perpetrator, under any of the following circumstances:

(1) Where a person is incapable, because of a mental disorder or developmental or physical disability, of giving legal consent, and this is known or reasonably should be known to the person committing the act. Notwithstanding the existence of a conservatorship pursuant to the provisions of the Lanterman-Petris-Short Act (Part 1 (commencing with Section 5000) of Division 5 of the Welfare and Institutions Code), the prosecuting attorney shall prove, as an element of the crime, that a mental disorder or developmental or physical disability rendered the alleged victim incapable of giving consent.

(2) Where it is accomplished against a person's will by means of force, violence, duress, menace, or fear of immediate and unlawful bodily injury on the person or another.

(3) Where a person is prevented from resisting by any intoxicating or anesthetic substance, or any controlled substance, and this condition was known, or reasonably should have been known by the accused.

(4) Where a person is at the time unconscious of the nature of the act, and this is known to the accused. As used in this paragraph, "unconscious of the nature of the act" means incapable of resisting because the victim meets one of the following conditions:

(A) Was unconscious or asleep.

(B) Was not aware, knowing, perceiving, or cognizant that the act occurred.

(C) Was not aware, knowing, perceiving, or cognizant of the essential characteristics of the act due to the perpetrator's fraud in fact.

(D) Was not aware, knowing, perceiving, or cognizant of the essential characteristics of the act due to the perpetrator's fraudulent representation that the sexual penetration served a professional purpose when it served no professional purpose.

(5) Where a person submits under the belief that the person committing the act is the victim's spouse, and this belief is induced by any artifice, pretense, or concealment practiced by the accused, with intent to induce the belief.

(6) Where the act is accomplished against the victim's will by threatening to retaliate in the future against the victim or any other person, and there is a reasonable possibility that the perpetrator will execute the threat. As used in this paragraph, "threatening to retaliate" means a threat to kidnap or falsely imprison, or to inflict extreme pain, serious bodily injury, or death.

(7) Where the act is accomplished against the victim's will by threatening to use the authority of a public official to incarcerate, arrest, or deport the victim or another, and the victim has a reasonable belief that the perpetrator is a public official. As used in this paragraph, "public official" means a person employed by a governmental agency who has the authority, as part of that position, to incarcerate, arrest, or deport another. The perpetrator does not actually have to be a public official.

(b) As used in this section, "duress" means a direct or implied threat of force, violence, danger, or retribution sufficient to coerce a reasonable person of ordinary susceptibilities to perform an act which otherwise would not have been performed, or acquiesce in an act to which one otherwise would not have submitted. The total circumstances, including the age of the victim, and his or her relationship to the defendant, are factors to consider in appraising the existence of duress.

(c) As used in this section, "menace" means any threat, declaration, or act which shows an intention to inflict an injury upon another. 261.5. (a) Unlawful sexual intercourse is an act of sexual intercourse accomplished with a person who is not the spouse of the perpetrator, if the person is a minor. For the purposes of this section, a "minor" is a person under the age of 18 years and an "adult" is a person who is at least 18 years of age.

(b) Any person who engages in an act of unlawful sexual intercourse with a minor who is not more than three years older or three years younger than the perpetrator, is guilty of a misdemeanor.

(c) Any person who engages in an act of unlawful sexual intercourse with a minor who is more than three years younger than the perpetrator is guilty of either a misdemeanor or a felony, and shall be punished by imprisonment in a county jail not exceeding one year, or by imprisonment pursuant to subdivision (h) of Section 1170.

(d) Any person 21 years of age or older who engages in an act of unlawful sexual intercourse with a minor who is under 16 years of age is guilty of either a misdemeanor or a felony, and shall be punished by imprisonment in a county jail not exceeding one year, or by imprisonment pursuant to subdivision (h) of Section 1170 for two, three, or four years.

(e) (1) Notwithstanding any other provision of this section, an adult who engages in an act of sexual intercourse with a minor in violation of this section may be liable for civil penalties in the following amounts:

(A) An adult who engages in an act of unlawful sexual intercourse with a minor less than two years younger than the adult is liable for a civil penalty not to exceed two thousand dollars ($2,000).

(B) An adult who engages in an act of unlawful sexual intercourse with a minor at least two years younger than the adult is liable for a civil penalty not to exceed five thousand dollars ($5,000).

(C) An adult who engages in an act of unlawful sexual intercourse with a minor at least three years younger than the adult is liable for a civil penalty not to exceed ten thousand dollars ($10,000).

(D) An adult over the age of 21 years who engages in an act of unlawful sexual intercourse with a minor under 16 years of age is liable for a civil penalty not to exceed twenty-five thousand dollars ($25,000).

(2) The district attorney may bring actions to recover civil penalties pursuant to this subdivision. From the amounts collected for each case, an amount equal to the costs of pursuing the action shall be deposited with the treasurer of the county in which the judgment was entered, and the remainder shall be deposited in the Underage Pregnancy Prevention Fund, which is hereby created in the State Treasury. Amounts deposited in the Underage Pregnancy Prevention Fund may be used only for the purpose of preventing underage pregnancy upon appropriation by the Legislature.

(3) In addition to any punishment imposed under this section, the judge may assess a fine not to exceed seventy dollars ($70) against any person who violates this section with the proceeds of this fine to be used in accordance with Section 1463.23. The court shall, however, take into consideration the defendant's ability to pay, and no defendant shall be denied probation because of his or her inability to pay the fine permitted under this subdivision.